Lower than normal fuel pressure is a symptom of a fualty fuel pump or a restricted fuel filter. The larger of the two lines (located on the right-rear of the throttle body) is the fuel supply. Fuel System Checks Fuel Pressure is critical to the operation of a fuel injection system. Adapter replaces the fuel filter during fuel system pressure checks, eliminating the need to unhook the fuel line from the throttle body. 75 Free postage. The engine would normally crank over and fire, get oil pressure and the fuel pump would run via the oil sending unit. I checked the fuel pressure on the 460 in my 93 F350 today. Is this enough pressure to operate properly? I'm trying to chase down an annoying hesitation problem I've had on the truck for about a year now and its driving me crazy. Shop to buy this TBI "T" fitting used for GM TBI Fuel Pressure Tester CP7817 only. 5613 Vacuum / Pressure Gauge Kit FUEL PRESSURE TESTING PROCEDURE WARNING: FOR USE ON FUEL SYSTEMS WITH A CARBURETOR, OR LOW-PRESSURE TBI SYSTEMS NOT EXCEEDING 15 PSI. The pressure test kit checks electronic and standard Continuous Injection Systems, GM throttle body, Ford CFI, and Asian and European AFC. 86-95 GM TBI Fuel Adjustable Fuel Regulator (with gaskets) Price: $69. Connect the fuel pressure gauge using the appropriate adapter. I did find in my cheapie book the fuel pressure for 1990 needs to be between 9-13 PSI for TBI systems. This includes Ford high pressure central fuel injection and GM, Ford, and Chrysler multi-port fuel injection. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. Fuel Injector Pump Pressure Test Gauge Injection Testing + Free Shipping over $89 - Product Experts to answer all your questions. Page 1 of 3: How to Test the Fuel Pump on GM TBI Fuel Systems. 33770, 33900, 33950, 33980, 36100, 36150, 36200, 36250, 37450 and 37600. This fitting will replace the TBI inlet fuel nut and provide a place for your fuel pressure gauge attachment. General Motors - except TBI Japanese Fuel Injection Systems Others using Bendix-type Fuel Injection or Schrader-type valve, including the small valves found on Ford products. After the vehicle is shut off is the pressure suppose to hold steady at the rated pressure? when i turn the truck off the pressure drops rapidly to 3 psi after stalling around 6psi. Engine Fuel Injection System Pressure Manometer Tester Diagnostic Bosch Gm Tbi. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. The mounting flange offers a dual bolt pattern, and with an adapter can even be used on a spreadbore-style manifold. This includes Ford high pressure central fuel injection and GM, Ford, and Chrysler multi-port fuel injection. 0 Ford into an old pickup and had great luck in finding and adapting an in-line fuel pump that can handle the high psi demands of the fuel injection. Page 3 of 3: How to Test the Fuel Pump on GM TBI Fuel Systems. Take The Shot. Also works on imports, including CIS and CISE fuel systems. To accomplish this the ECU increases or decreases fuel delivery by increasing or decreasing the time that the injectors are open. Get deals on automotive parts, truck parts and more. GM in-line adapter replaces fuel filter with threads on both ends. The screen has been removed in production, and replaced with an e-c1ip. any ideas, thanks. Fuel Pressure Tester Kit Safely test car and truck fuel pressure systems equipped with a Schrader or fuel access valve test port on the fuel line. Lower than normal fuel pressure is a symptom of a fualty fuel pump or a restricted fuel filter. After pressure is gone there is a clip in front of and behind the filter. The key to direct injection is a high-pressure fuel pump. My main question now is: what is the fuel pressure suppose to be? With the fuel pump on, it registers around 50 psi. Put a fuel pressure gauge on it and see for yourself. Testing for fuel injector or fuel rail leakage: Clamp off the rubber hose portion of Adaptor Tool between the fuel rail and the test port "T" on Adapter Tool. Includes 91-803135 Test Port Adaptor Kit and 91-806901 TBI Pressure Valve. 0PEFS and TBI injectors Thanks to all of you for your comments. Throttle Body Fuel Injection Initial Calibration of the TBI Disclaimer The author of this presentation assumes NO responsibility for information provided causing the owner to modify or alter their motorhome which shall result in problems or mishaps. precise fuel pressure and adequate fuel volume. That's the Actron CP7817 fuel pressure tester with the adapter needed for TBI use - and Jegs is selling them for $20. Not sure if there is a fitting to attach to on your truck, or if you have to disconnect fuel line. "actron cp7817 throttle body injection fuel pressure tester" & marketplace (500+) Only. The fuel rail is the metal tube that holds the injectors in place and provides fuel pressure. Page 1 of 3: How to Test the Fuel Pump on GM TBI Fuel Systems. I checked fuel psi, it is 10 under load. Only use this tester on GM-TBI - for all other TBI use our TU-448. The Sniper TBI unit comes with an integrated fuel pressure regulator. If your car does not have it, check the manufacturer's guideline. Stopping the flow in the return line and running the pump momentarily will test to see if a low pressure problem is caused by the regulator. To test the regulator, with engine at idle, pull the vacuum hose off the regulator (cover the end of the vacuum hose with your thumb). 2L Fuel Injection Pressure Test Adapter with Quick Coupler. Seems to confirm the pressure test that I did at the schroeder valves. In fact, these two work in tandem, so when something goes wrong with one, it may cause problems with or seem to be a problem with the other. The Y45-2 Rochester Marine Throttle Body Injection (TBI) is OEM original marine equipment. How fuel injectors work (Bob O’Neill and Bob Lincoln) The logic module controls the fuel injectors and the amount of fuel supplied to the engine. Holley recommends between 5 and 7 PSI. A spring loaded regulator valve (2 on the V12) spills off the excess fuel which returns to the fuel tank. A 454TBI would be ideal here, but avoid a holley670, unless you just use the base and bolt a Rochester tower on it, The Holley injectors suck. How to Use Starting Fluid to Check Fuel Pump. 1995 gm tbi fuel pressure test with OTC's 4480 fuel pressure kit. You will be able to use your OEM fuel line. This test procedure does not contain any vehicle specific diagnostics. Pressure relief valve for safe, clean testing. To test it completely I had someone key it up a bunch of times while watching the poppets and fuel regulator and I cannot see a leak. Only use the Fuel Pressure Tester Kit on gasoline powered engines. Tbi owners need this to check the fuel pressure without all the hassles of messing behind the throttle body , save time and money , if you only use it once you saved yourself money Read more 2 people found this helpful. BWD Fuel Pressure Regulator 24133. Using pliers to loosen the Corbin spring clamps, pull the vacuum line off the fuel pressure regulator and the low pressure fuel return line. GM TBI Adapter for Professional Fuel Pressure Tester Kit CP7838. The throttle looks like a carburetor without the fuel bowl, the metering jets or the float. The Holley TBI units don't have a vacuum referenced fuel pressure regulator, because the four fuel injectors are located above the throttle blades (and therefore not subjected to vacuum). FORD Optimum series TBI kit. This includes Ford high pressure central fuel injection and GM, Ford, and Chrysler multi-port fuel injection. Tech B says that one or more of the injectors may be defective, causing the fuel to get into the hose. Testing for fuel injector or fuel rail leakage: Clamp off the rubber hose portion of Adaptor Tool between the fuel rail and the test port "T" on Adapter Tool. The high pressure fuel pump is attached to the top of the fuel pump tank. Recently replaced the the pressure sending unit (which was causing fluctuation oil pressure before), so im pretty sure it isnt that. Then, since my injectors are a bit too small, I upped the fuel pressure to 43-44ish, vac and engine off. Over time, these will cause the connectors’ nylon body to deteriorate and eventually break. found some good instruction on checking the pump instructions----- Unplug the fuel pump connector by the tank and check for power with a test light while someone turns the key to on. Finally, it must be realized that when the fuel system pressure is increased, fuel pump volume is decreased. Fuel pump is designed to push fuel, not pull it. Adapters Pressure Tester Sale. Figure 6-4, TBI System Components. The pressure test kit includes a 100 PSI fuel pressure gauge with a quick release valve and seven hose assemblies with four paired hose adapters. I recently installed a new fuel pump in my 87 k5 with a swapped in 454 TBI thinking it would hepl with my fuel pressure leak down. If your car doesn't have the right valve, an adapter can help you out. Fuel Pressure Regulator Models: 5. Pump is MORE than sufficient for any TBI motor. Easy online ordering and next-day delivery available with 24/7 expert product support. No more excuses for not checking your fuel pressure during troubleshooting, fellas. Test gasoline fuel pump pressure on most fuel injection equipped vehicles (except for CIS-Jetronic, Bosch and GM throttle body systems). I also own a '95 454 TBI and KNOW it's correct. Fuel Pressure Regulators When manufacturers first switched from carburetors to fuel injection, most of these engines contained TBI throttle body injection systems. GM cars with TBI have no Schrader valve to connect with, therefore an in-line tester such as this tester is required. This will provide you with a standard schrader valve where you can attach your fuel pressure gauge. Fuel pressure test kit is used to test fuel pressure & to perform basic electrical tests. test for proper fuel pressure. Try to discover out various other facts regarding the cars' record, such as who its previous owners were as well as any sort of maintenance executed by the dealership. Get yours online today and pick up in store. GM TBI Fuel Pressure Tester. Shop for Innova Fuel Injection Pressure Tester with confidence at AutoZone. SG Tool Aid GM 2. The OEMTOOLS Fuel Pressure Test Kit is designed to test fuel pressure and perform basic electrical tests. Fuel tank pressure 86 Camaro Iroc-Z28 is way too much has new fuel pump that whines in the tank because of too much pressure and engine will stall from fuel starvation? Check for proper. Re: Ok finally done a fuel pressure test on my 88 tbi truck I've seen more than one GM product have issues with the stacked positive cables. Remove the plug by retracting the Shrader collar,. Connect the Gauge (1) to the Pressure Testing and Bleed-off Assembly (25). Arguably the most important instrument in your day-to-day activities is your car. Use on older Ford TBI systems not equipped with small Schrader test valve. GM TBI Adapter 7/16. 7 TBI, IAC, Throttle Position Sensor repair, 1995 - Duration: 6:07. Fuel Pressure Test Kit Is Used To Test Fuel Pressure & To Perform Basic Electrical Tests. 3l TBI engine needs to put out 9-13 psi with key on engine off. 8 psi (will support up to 255hp on a super or turbocharged engine IF you were only running 51 psi of fuel pressure) Here are some simple formulas you can use to determine what your injectors would flow at different pressures. How fuel injectors work (Bob O’Neill and Bob Lincoln) The logic module controls the fuel injectors and the amount of fuel supplied to the engine. This did not fix the issue. 86-95 GM TBI Fuel Pressure Gauge. Higher pressure than 15 psi indicates. Top TBI acronym meaning: Traumatic Brain Injury. 7 efi fuel pressure tester kit from Autozone. If fuel pressure readings measured in this test procedure are not within vehicles manufacturer's specification, then use vehicle service manual along with fuel pressure tester kit to service problem. The fuel pumped by the fuel pump must be at enough volume and pressure to overcome the spring pressure; the excess is sent to the return line back to the fuel tank. ECM MODES OF OPERATION. I would look there first. The higher pressure of the EFI system will quickly rupture standard low-pressure fuel line. While testing does entail some work, few things are more rewarding than successfully troubleshooting your fuel pump relay. Also it should hold pressure for at least 10 min after cutting the key off. I have a Pontiac LeMans, 1989 year of manufacture, engine 1. Put a new fuel pump in it & brought it up to 16psi. Fuel Pressure Leak-Down Test An area often overlooked is the performance of the fuel system not while the engine is running, but when it is shut off. It's inside your air cleaner standing proudly on top of the TBI. If your car does not have it, check the manufacturer's guideline. Find Actron Professional Fuel Pressure Tester Kits CP7838 and get Free Shipping on Orders Over $99 at Summit Racing! When it comes to diversity, Actron professional fuel pressure tester kits have it in spades. gauge with an easy-to-read 0 to 150 PSI scale. Moses Ludel's 4WD Mechanix Magazine - Jeep Fuel Pressure Requirements Jeep How-to: Fuel Pressure Needs for Carburetion and Fuel Injection Carburetion and TBI run at a much lower fuel pressures than MPI systems. Must be used with #2203 hose assembly in #2200. Price $203. Page 3 of 3: How to Test the Fuel Pump on GM TBI Fuel Systems. you looking for low priced OTC 7665 GM TBI Fuel Pressure Adapter? before decision to buy, I searches on on-line so long time. 00 O-ring adapter and tee manifold. The pressure test kit includes a 100 PSI fuel pressure gauge with a quick release valve and seven hose assemblies with four paired hose adapters. This fuel pressure regulator can adjust the fuel pressure into the injector based on the change in intake manifold vacuum and make the difference between fuel pressure and intake manifold pressure remain constant. Low Cost tester, cleaner. Gauge calibrated from 0-140psi (0-10 bar). also after the engine is hot and parked for awhile it wont start it acts like it floods out. Connect the Gauge (1) to the Pressure Testing and Bleed-off Assembly (25). The pump mounts in-line (out of the fuel tank) with two supplied cushioned clamps for a quick and sturdy installation. While testing will need to be performed to verify the failure,. Next you need to measure the fuel pressure there, it should be between 9 and 13 lbs. If your gauge is accurate you have to deal with that low pressure. When we switch the key to on, the computer will turn on the fuel pump for a few seconds. Where's the fuel pressure regulator in a 454 TBI? My pressure is down to about 10 PSI and jumps up to 17 PSI when I close off the fuel return line. Quick couplers provide for fast and easy hook-up. if you need to have EGR for emissions testing then you need EGR tube and headers or driverside exhaust manifold for a 1996 vortec truck. 7 TBI fuel pressure issue The way this appears to be set up as follows: low pressure fuel pump at front of motor. i know the 4. Performs running, residual, rail and flow rate pressure tests; Professional dual scale gauge reads 0-100psi and 0-700kPa with relief valve and fuel discharge hose and protective rubber boot; Includes adapters, hoses and fittings to test fuel injection systems plus two popular adapters for import vehicles, as well as the GM TBI adapter. Test gasoline fuel pump pressure on most domestic and imported fuel injection equipped vehicles. Pressure at the fuel rail about 7lb and falls to 0 as soon as pump stops, took the line off at the output of the filter and can NOT hold the pressure back with my finger so i figure the regulator is bad. 3 Liter V6 GMC Chevy Chevrolet CMFI/Central Multiport Fuel Injection System that has only One Maxi Fuel Injector. More Tutorials. I'm using my 2003 Jeep Tj to to the fuel regulator test. AUDI 1985 – 00 AFC, MOTRONIC System System Residual w/o vacuum w/vacuum (PSI) Engine Year (PSI) (PSI) 2226cc 1991 43 – 46 35 – 39 36 – 40 2226cc 1992—95 58 – 61 – 49 – 54 2309cc 1992 – 93 – 55 – 61 46 2771cc 1992 – 99 55 – 61 48 – 54 32 – 44 3562cc 1990 – 91 58 – 62 49. The obtained results (mass flow rate of air and fuel, the pulse width of the injector) are used as the initial and boundary conditions of numerical simulation of the TBI system using computational fluid dynamics (CFD) to simulate and check the airflow and fuel injection in the TBI system. Nothing to do with Chap. Anton Dyckyns 53,461 views. Would need the tester and adapter. 86-95 GM TBI Fuel Adjustable Fuel Regulator (with gaskets) Price: $69. In most instances the DIY’er does not have the ability to accurately and under operating pressure, measure how much fuel the injector delivers before and after the cleaning process. Use on most Ford TBI systems equipped with or without small Schrader test valve. for auto repair shops, bulk engine rebuilders and performance engine builders. The regulator is inside the TBI unit. How to Use Starting Fluid to Check Fuel Pump. How To Check Fuel Pressure. Turning the 5/32" allen setscrew inward (clockwise), increases fuel pressure. The fuel pressure tester can easily diagnose faulty components in the vehicle's fuel system if you have a car. Nothing to do with Chap. GlowShift’s Big Line Kit upgrades the restrictive line by replacing the line from the fuel filter housing to the injection pump to allow for a. The low pressure side did but not the high pressure side. 3 out of 5 stars 8 $24. A worn out or faulty regulator may also cause the check engine light to turn on or the engine compartment to smell of gasoline. Fuel Pump The ECM sends a signal to the Fuel Pump Relay to turn on the fuel pump. Price: $29. Fuel Pressure Test Kit Is Used To Test Fuel Pressure & To Perform Basic Electrical Tests. Everything includes the Tanks Inc tank with internal electric fuel pump. Most TBI systems require a fuel pressure in the teens or low 20s PSI. Either disable the fuel pump and plug the fuel return line (doing this on some cars may set a fault code which must be cleared after the job is completed), or; Install a U-tube so the fuel will return directly to the tank. This fitting will replace the TBI inlet fuel nut and provide a place for your fuel pressure gauge attachment. The pump mounts in-line (out of the fuel tank) with two supplied cushioned clamps for a quick and sturdy installation. In most instances the DIY’er does not have the ability to accurately and under operating pressure, measure how much fuel the injector delivers before and after the cleaning process. We aim to provide a range of wholesale Adapters Pressure Tester that is simplistically put very cheap from Ebay. Put a new fuel pump in it & brought it up to 16psi. It features a large 4 in. S & G Tool Aid 57650 GM TBI Fuel Pressure Test Adapter SG57650 In Line Adapter Replaces fuel filter with threads on both ends. Do not use the Fuel Pressure Tester Kit on diesel or Flex-Fuel engines. I checked fuel psi, it is 10 under load. Autozone rents (for free with deposit) a fuel pressure test set which appears to have the right connectors for TBI. This includes Ford high pressure fuel injection & GM, Ford & Chrysler multi-port fuel injection. 454 tbi? It would appear the pressure is higher for the 94-95 454 tbi. Kit contains adapters to test all GM vehicles with Multi-port and some Throttle Body Injection (TBI). Link to actual tester OTC 4480 Stinger Basic Fuel Injection. OTC 518487 Adapter, Fuel Line (TBI) $28. fuel injectors. Wiki User 04/28/2011. If the fuel pump is flowing fuel and there is no fuel at the test port, you either have a clogged fuel filter or the pressure regulator is clogged. Fuel Pressure does reach the TBI But the injectors won't release any fuel. I bench tested the fuel pump with a battery just to see if it ran. It was time for a tune up so new cap, rotor, wires & plugs installed. Not long after, and perhaps coincendently, I noticed the fuel pressure as shown on the gauge, to be constantly fluxuating, bouncing up and down several times a second like 2-4 PSI. Because it’s sealed to contain the liquid inside, a liquid filled gauge no longer compares line pressure to actual atmospheric pressure, reporting the difference. The 1227747 ECM was from a junkyard for $30 and the distributor was junkyard for $30. Another effective test is to measure the pressure loss in the fuel rail when each injector is fired and pulses for a set period of time. It comes with a variety of adapters and gauges for checking many types of systems. The early systems from 1982-1986 are just too old to do much with. 1 year warranty. The stock MAP sensor used on all non-supercharged and non-turbocharged engines is what as known as a 1-bar MAP sensor. FUEL PRESSUREFUEL PRESSURE SPECIFICATIONSSPECIFICATIONS 2. GM Inline Adapter - Replaces fuel filter with threads on both ends for Throttle Body Injection. Adapts to work with test port connections, end of hose connections and end line connections. It takes about another 2 minuets to drop to zero. 0 to 100 psi Fuel Pump Tester Kit by OEM Tools®. If you do hook up fuel hose to these fittings, make sure you use high pressure fuel line everywhere on the feed side of the fuel system. MPI Fuel Pressure Leak Down Test with Engine Off. Use this gauge on GM tuned port injection systems found on most late model (85 and later) Corvette, Camaro, and Firebirds. Refer to the vehicle's service manual for specific pres-sure relief procedures. How fuel injectors work (Bob O’Neill and Bob Lincoln) The logic module controls the fuel injectors and the amount of fuel supplied to the engine. * Additional pressure gauge for references on incoming pressure during the operation (0-7 var) * Glow Plug Adaptor: Wide range of Alfa, BMW, Chrysler, Daewoo, Fait, Ford, Hyundai, Isuzu, Toyota, Va AG, Vauxhall, Volvo Diesel engines. Parts are just part of what we do. Find many great new & used options and get the best deals for GM TBI Fuel Pressure Adapter OTC 7665 at the best online prices at eBay! Free shipping for many products!. Fuel Pressure Regulators-So, Fuel pressure can run between 25 to 60 pounds of pressure depending on the vehicle and manufacturer. Use a fuel pressure gauge to verify that the fuel pressure is 12 psi for 502-4, 502-5, & 502-7. And with a fuel pressure test gauge from AutoZone, it's easy. SOURCE: 90 chevy k1500 350 tbi fuel problem starts but wont stay running try bypassing the oil pressure switch on the back of the block behind the distributor, if there oil pressure switch goes bad it will do this. High performance Mustang parts, engines, clamps, exhaust, fuel pumps and more. We will flow test your injectors at whatever fuel pressure you specify. About Fuel Injection Tester. The system has a number of different operating modes:. Part # 62-FP 86'-95' TBI Fuel Pressure Adapter Fitting. This includes Ford high pressure central fuel injection and GM, Ford, and Chrysler multi-port fuel injection. 454 tbi? It would appear the pressure is higher for the 94-95 454 tbi. Walker is committed to meeting or exceeding OEM or equivalent standards and specifications. The Fuel Pressure Tester Kit works on most domestic fuel injected vehicles having a Schrader valve test port on the fuel rail. 454SS(91-93) and 94-95 3/4 and 1 ton trucks used 90 lb/hr injectors at 28-32 psi (high pressure system) Vortec L29 454 290 hp 410 lb/ft torque. Also Contains Multimeter, 9 Volt DC Battery, Black & Red Multimeter Clips, Multimeter Leads, M8 x 1 Banjo Bolt, M12 x 1. The fuel injectors were located above the throttle plate and unaffected by manifold vacuum. If you end up replacing your fuel pressure. A TBI pump may have a normal current draw as low as 3 to 5 amps, with PFI pumps pulling 4 to 6 amps on average. I have 50 PSI running. Parts are just part of what we do. This item carries a 1 year warranty on factory defects, but does not cover abuse or misuse of the product. Click for more details. The stock MAP sensor used on all non-supercharged and non-turbocharged engines is what as known as a 1-bar MAP sensor. While testing will need to be performed to verify the failure,. The fuel lines are essential you will be going from 12-14 psi fuel pressure to about 50 and the TBI fuel lines will not cut it! Metal fuel and return line from fuel rails to rubber fuel and return lines, which then go to the metal fuel lines in the chassis. In this case I can see why youre thinking TBI. OTC 7187 TBI Noid Lite for GM. Quickly and easily locate any malfunctioning fuel system component, including fuel filters, pressure regulators, fuel lines, and fuel pumps without removing it from the vehicle. So a couple routine things to do first, you said you had fuel so check for adequate pressure,also check for spark. ~ Paul aka "Tha Driver" Custom Fiberglass Parts. All these needed to be done, so no regrets, but I don't want to spend $ to replace a part I don't need. Fuel Pressure Regulators When manufacturers first switched from carburetors to fuel injection, most of these engines contained TBI throttle body injection systems. If it's low (not zero but low),. "actron cp7817 throttle body injection fuel pressure tester" & marketplace (500+) Only. 99921942 bars) which is considered the industry standard for testing fuel injector flow. 96 (rich), and eventually goes down to. It's either the same price or cheaper than OEM style units from parts stores. Anton Dyckyns 53,461 views. Safely tests vehicle fuel pressure systems on GM TBI vehicles not equipped with a Schrader or fuel access valve test port on the fuel line. The regulator is inside the TBI unit. If the return line is pinched, clogged, kinked or otherwise restricted, the fuel pressure at the regulator and port will soar. The OEMTOOLS Fuel Pressure Test Kit is designed to test fuel pressure and perform basic electrical tests. More Tutorials. 5l (r) 151" tbi 700 17112123, 17111986 24004 15010. Re: 1994 Volvo 5. Analyzing LTFT and STFT is a great way to know a particular vehicle’s fuel consumption trend or how well that vehicle has been performing with regards to fuel control. Use this gauge on GM tuned port injection systems found on most late model (85 and later) Corvette, Camaro, and Firebirds. It is important to note that Throttle Body Injection systems operate at 12 PSI. Updated October 2019. The FP seems to prime fine and I can hear it running when idled and what not, though I haven't tested it for the 14-15 psi pressure that's needed. com will make 25hp more than the GMPP intake which seems to max out around 275hp. Today, in the footsteps of Stuart Hilborn, the dedicated sales and technical staff at Hilborn Fuel Injection provide unmatched service and technical expertise when it comes to design, service and flow testing of your Hilborn injector. I recently did the heads on it and while putting everything back together replaced the stock fuel pressure regulator with an adjustable unit from Jet. 8 psi = 165. The regulator should set fuel pressure for the system to 43-45 psi with the fuel pump running. Fuel injectors don't last forever and when they fail, your 2. We supply modified OEM type throttle bodies for GM, and Mopar/Jeep EFI. The complete TBI system comes with all components needed except for air cleaner, throttle cable/linkage, and fuel lines. The key is to get the right kind of pressure regulator in place to drop the PSI to a level perfect. Find Fuel Injection Test Adapter Fittings and get Free Shipping on Orders Over $99 at Summit Racing! GM TBI FUEL PRESSURE ADAPTER Vacuum/Pressure Tester, Fuel. Basic Overview of Electronic Fuel Injection. GM TBI Adapter 7/16. I would bet that if you can hear the fuel pump running, it is the regulator, and here is why: TBI systems run a similar pressure to a Carb - about 7psi. TCB Speed sells sprint car parts, sprint car racing parts, midget parts, midget racing parts, mini sprint parts, micro sprint parts, quarter midget parts, silver crown parts. Current service tools and SI procedures, which use a pressure gauge and the Tech 2, are. Are you looking to buy Actron CP7817 Throttle Body Injection Fuel Pressure Tester ?If you’re considering to buy Actron CP7817 Throttle Body Injection Fuel Pressure Tester product. Test leaking Fuel Injectors. Page 1 of 3: How to Test the Fuel Pump on GM TBI Fuel Systems. I did find in my cheapie book the fuel pressure for 1990 needs to be between 9-13 PSI for TBI systems. 2L Fuel Injection Pressure Test Adapter with Quick Coupler. Must be used with #2203 hose assembly in #2200. Classic symptom that the regulator needs replaced. The PCM is the main computer of a vehicle. It is not a device that shows if the pressure in the fuel tank is correct. TBI is single. When the pressure is low, the vehicle struggles to start and accelerate. Misfires and a decrease in power, acceleration, and fuel efficiency. Safely tests vehicle fuel pressure systems on GM TBI vehicles not equipped with a Schrader or fuel access valve test port on the fuel line. Re: In tank or in line fuel pump 350 tbi /CJ7 Lots of questions about pumps lately. EFI systems use high-pressure fuel systems - all of the hoses and fittings on the pressure side must be rated to handle the pressure. Additionally important: With TBI, the charge of fuel depends on the constant fuel pressure at the pressure regulator to provide an injector fuel pulse. Failure of this part could result in rough idle, black smoke or fuel in the exhaust, or engine stalling. AUDI 1985 – 00 AFC, MOTRONIC System System Residual w/o vacuum w/vacuum (PSI) Engine Year (PSI) (PSI) 2226cc 1991 43 – 46 35 – 39 36 – 40 2226cc 1992—95 58 – 61 – 49 – 54 2309cc 1992 – 93 – 55 – 61 46 2771cc 1992 – 99 55 – 61 48 – 54 32 – 44 3562cc 1990 – 91 58 – 62 49. MerCruiser Service Manual # 24. What is the difference (in terms of symptoms) between a bad fuel pump and a bad fuel pressure regulator? The answer is difficult, since the symptoms are going to be very similar. Buy GM TBI Fuel Pressure Tester Adapter - BK 7002460 online from NAPA Auto Parts Stores. Each TBI comes complete with injectors, TPS, air control valve, and new throttle body bushings. S & G Tool Aid 37650 GM TBI Fuel Injection Pressure Tester Adapter This adapter is for use with Cat. Unplug the idle air control unit (IAC). Also included as part of the gauge assembly is a Shrader fitting plug, to help prevent contamination while the gauge is not in use. You will want to tap into the pressure at the fuel filter, as the TBI fittings tend to break or leak, which is bad news. The main advantage is that MPFI meters fuel more precisely than do TBI designs, better achieving the desired air-fuel ratio and improving all related aspects. Test leaking Fuel Injectors. The milliamp probe can be used for testing fuel pumps and other low current electric motors. 60 valves 58cc. Today, in the footsteps of Stuart Hilborn, the dedicated sales and technical staff at Hilborn Fuel Injection provide unmatched service and technical expertise when it comes to design, service and flow testing of your Hilborn injector. Link to actual tester OTC 4480 Stinger Basic Fuel Injection. Dimension of attachment is 1/8" NPT. If not you may. Re: 1994 Volvo 5. It works by estimating airflow based on a few known parameters, and then calculating fuel flow directly from exhaust lambda. We simply want to make your Adapters Pressure Tester shoping experience more attractive. In a carburetor system, the fuel is injected into the neck of the carburetor (sort of a venturi) where it mixes with air to produce 'charge'. 5 banjo bolt, GM TBI adapter, 5/16 Inch. 0L) and LO5 (5. I used a fuel pressure guage hooked to the fuel rail to bleed off the line pressure first. for auto repair shops, bulk engine rebuilders and performance engine builders. Easy to use parts catalog. 3L/305/350/454 TBI $89. Finding the fuel-pressure test-port. Moses Ludel's 4WD Mechanix Magazine - Jeep Fuel Pressure Requirements Jeep How-to: Fuel Pressure Needs for Carburetion and Fuel Injection Carburetion and TBI run at a much lower fuel pressures than MPI systems. Perform injector pressure drop test per industry standard procedures. Failure of this part could result in rough idle, black smoke or fuel in the exhaust, or engine stalling. In-store: set your location. The fuel pump is only a couple of years old and is barely audible. This test will tell you if the computer is pulsing the fuel injectors open when cranking the engine over. The throttle looks like a carburetor without the fuel bowl, the metering jets or the float. In about 10 minutes we diagnosed a faulty pump without guesswork. The kit includes: test gauge, boot and hoses, M12x1.