Question about 1991 Chevrolet K1500

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What does a feul pressure regulator need to be set at on a 1991 tbi 5.7 ltre changed over to caborator still using the origanal fuel pump in the tank?

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7-9 psi regular carb 12 hi proformance

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You need to set the meter by what specs are needed for the carburetor you now have on this truck. it is not noted here in your question

Posted on Feb 02, 2010


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Deere 445 fuel pump not priming line, will not start, runs with fuel in caborator, no pressure in line.

pull the fuel pump and overhaul/replace it
could be dirt under valves or no power if electric

Feb 21, 2017 | Cars & Trucks

2 Answers

Is the feul pump insert hole the same in a 1985 mustang gt as a 1993 jeep wrangler

Just use the pump that is already in the jeep. Just make sure you use a fuel pressure regulator set to 42-48 PSI

Jul 15, 2016 | Jeep Cars & Trucks

1 Answer

We changed the feul pump it comes on u can hear it however the car wont start got any suggestions still acts as if it is not getting feul

Just a couple of suggestions, it could be that the injectors are not firing. Each injector has a solenoid on top of it with an electrical connector, the injector signals come from the control Electronic Control Module. You could have a defective module. Was the "check engine light"on prior to the failure?? Have you verified that you have ignition?? If you have ignition, replaced the fuel filter, and it's still not starting, I would perform a fuel pressure test to make sure you have appropriate fuel pressure. If you are not getting the appopriate pressure, then I would look at the fuel filter or the fuel pressure regulator.

Sep 24, 2011 | 1991 Oldsmobile Cutlass Ciera

1 Answer

My van will not run i have change fuel pump,filter

Try to see if you have a fuel pump relay and a fuel pump cutoff switch( fuel pump shutoff is for if you roll the vehicle or have an accident). Also, you may have a bad fuel pressure regulator. I don't know what type of fuel injection you have but the regulator is on the fuel rail for multiport injection and on the TBI for throttle body injection..the best way to check for proper fuel pressure is to get a fuel pressure tester and connect it to the fuel rail( the connector looks like that of a valve stem)...on the multi port the pressure should be around 40-60psi and on the TBI it should be around 15-25psi. If all else, then check to see that the injectors are ok

Jan 03, 2011 | 1999 GMC Safari

1 Answer

1992 Plymouth sundance 3.0 ltre. Wires are good the feul n pump just repalced and still sometimes will not start or stop when running then restarts after 10 minutes. Interestingly the tachometer only kick...

any time you replace the fuel pump you MUST replace the fuel filter. Sounds like it could be a couple of different things. Pick up coil if it has a distributor. bad coil pack. Replace fuel filter first .Good Luck!!!!

Nov 14, 2010 | 1991 Plymouth Sundance

2 Answers

(1991 Sonoma 2.8L) I can watch the injectors run out of gas as the pressure drops, but how can I tell what is causing this? So far I have checked voltage at the pump (good), replaced the filter (new), I...

The ground wire for the fuel pump is separate from the wire harness and may need to be re-grounded. (Common thing to happen) The only other thing you can do is try replacing the the fuel pump relay or the fuel pump it self if it's weak. Believe the fuel pressure for your TBI system is 13 to 14.5 PSI to have your engine run 100%.
Good luck and recheck you wire harness and ground lead wire. Thank you for using Fixya

Mar 17, 2010 | 1991 GMC Sonoma

2 Answers

Where is the fuel regulator located on a 1988 tbi

Sits inside the throttle body, you would have to open to install regulator. Also check your fuel filter make sure it's not clog, fuel filter is under truck on fram rail, while your there do a fuel pressure test, with a fuel pressure tester, should have 13psi.

Nov 14, 2009 | 1988 Chevrolet Suburban

1 Answer

91 S10 2.5L TBI- no fuel spray, did I test this correctly?

put a full bottle of stp injector cleaner in half a tank of fuel and run it . use techron chevron fuel cleaner,

Sep 10, 2009 | 1991 Chevrolet S-10

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