Question about 1995 GMC Sonoma

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Engine turns over but does not start. I poured

Engine turns over but does not start. I poured some gas into the intake and it started momentarily. 4.3L V6 CPI L35 engine.

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Either a bad fuel pump or fuel pump relay. Take off the gass cap, have someone listen where the gas cap goes. When you turn the key to the on position you should hear the fuel pump run. If not, find the relay under the hood. Swap the relay with the one next to it (temporarily) Turn the key off then back on. If you hear the fuel pump running then replace the relay. If not the fuel pump is bad. Which is usually the problem.

Please Vote! Thanks!

Posted on Aug 31, 2010

  • md_licata Feb 17, 2011

    where is the fuel pump located

  • Rodney Clark
    Rodney Clark Feb 17, 2011

    I know that you don't want to hear this.... But it is in the fuel tank. You have to drop the fuel tank and it is inside the top of the tank. There is a clip that you have to rotate to unlock the fuel pump and fuel gauge sending unit. It will all come out in one piece.

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What would make a not start unless I pour gas into intake


Hi Clyde:
Since you mention "gas rail" I'm assuming fuel injected.
I'd check the fuel pressure in the rail. Should be around 40 PSI.
If pressure is OK then injectors not working. Time to check cps.
You know the spark side is OK since it will run.

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Truck will turn over but not start


Try pouring some gas in the intake dont go nuts with gas just a few ounces if the vehicle starts and then shuts off you have a bad fuel pump. I have a 1996 Blazer and I replaced mine last year make sure if that is the problem that you shop around for a price because it could save you hundreds of dollars shop around. If it runs and keeps going it could be you fuel injectors are bad. Last winter i had to put gas into my intake when it got real cold. What happens is the fuel gels when it gets cold and it makes it harder for the injectors to take it in . I also replaced my fuel injectors now this winter it starts right up.
( If you dont no where the intake is locate your air filter and follow the intake vent where the vent hose connects to your engine. Unscrew the clamp pull off vent hose and then pour the fuel inside of engine fuel intake manifold. I will bet money your vehicle will start if it dont you have some type of electrical situation.

Jan 05, 2011 | 2000 GMC Jimmy

1 Answer

I was driving down the road and the truck just quit. it cranks very well, but no intentions of turning over. i checked the spark,good but even when i puur gas in the carb. nothing happens


this sounds like a bad fuelpump, try spraying starting fluid in throtle instead of pouring gas, when you pour gas it may not enter all cylinders it may just sit in intake galley. try the starting fluid.also have someone crank the engine while you beat on bottom of gas tank with a rubber hammer, this sometimes shakes fuelpump and make a contact to get pump going again.

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1 Answer

Mazda MPV 1989 has good spark, good gas pressure but won't start. I disconnected one of the injectors and I tested for pulse but there's none. while driving, the van started feeling like loosing power. in...


YOUR BEST BET IS TO GO AHEAD AND REPLACE YOUR FUEL INJECTORS. BY POURING GAS IN TO YOUR INTAKE. YOU KNOW ITS GOT TO DO WITH YOUR FUEL SYSTEM. I TAKE IT YOUR CHECKING FURL PRESURE ON THE CHECK VALVE ON THE FUEL RAIL FOR THE INJECTORS. REPLCE THOSE AND YOU SHOULD BE GOOD. JAKE.B

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Im getting spark for the plugs and im getting fuel. i even put starter fluid in the intake and gas but it wont start it just turns over and nothing


A 1999 GMC Yukon has a fuel-injected engine. They are known for the fuel injector lines inside the intake plenum to break and flood the engine. If you are pouring starter fluid and gas in the intake you are only making it worse. replace the injector assembly with the "new improved" injector assembly and replace the plugs, then it will probably start.

This subject is covered by GM Technical Service Bulletin No.: 00-06-04-003B

See GM Parts List below. This replacement Injector assembly is now also available in the aftermarket.
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