Question about 1986 Chevrolet El Camino

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No fuel at injectors, fuel pump only runs for a couple seconds, changed the fuel filter

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1986 El Camino has a carburetor.

Posted on Nov 19, 2009


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I have a 2004 sentra with a 1.8 engine it will idle but as soon as you give it throttle it quits running

Sounds like a fuel problem. You need to check fuel pressure with key on-engine off, and engine running. Autozone, maybe others, rent or loan fuel pressure testers. If fuel pressure is low, suspect a weak pump or clogged fuel filter.

Just turning the key to on will turn the fuel pump on for a couple of seconds to put pressure in the line and to the injectors. During cranking or running, the pump is on continuously. Correct pressure is critical for the injectors to spray enough fuel into the cylinders.

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Wont start after fuel filter change

It sounds like a fuel pressure problem.Although you have fuel to the rail the injectors will not pulse unless the pressure is right.Any chance the line got some dirt in it,the line got crimped,or perhaps(I,m not being funny because I'VE done this )put the filter in backwards. good luck

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Just changed the fuel filter on my navara D40 dual cab started it, ran for 5 seconds and won't start again. Have pumped the top on the filter for ages. HELP

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Chevy tahoe 1999 now it starts but runs for a few seconds then i wait it starts and run for a few seconds again

Seem's like your fuel pump isn't able to keep the good fuel pressure.

Might be a good idea to check your fuel rail pressure. I assume that it drops before your engine dies!!!

If fuel pressure is ok in your rail, try cleaning the fuel rail and injectors. Sometimes dirt can go from a trashed fuel filter an clog yor rail or the injectors.

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1 Answer

96 T100 (3.4), will only run for 2-3 seconds then quit, change fuel filter, pump, cam sensor and crank sensor still won't run, but will run on ether. Where to go next?

What you are telling me is the engine is firing the plugs but not getting fuel.
When you changed the fuel pump and filter, did you check the fuel pressure at the rail ?
Are the injectors getting power and ground pulse ??

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1 Answer

Truck star up and run for one secord

Good with the gas test, and enough. A 2001 Sonoma? That's a very sophisticated Sequential Electronic Fudl Injection (SEFI) system, there. It seems either gas is not getting to the injectors, or the injectors are not letting gas into the cylinders. See if the pump buzzes on for a couple of seconds when you turn key to ON. You should hear it, or stand by the tank with filler cap off and listen while someone turns key to on. If you don't hear the pump come on to prime the fuel system and then shut off after a couple of seconds, you likely have a problem of a failed pump or something not letting power get to the pump. If you hear the pump run, then change your fuel filter. See if that helps. The next step would be to have the fuel pressure checked, and the system tested further. Good luck.

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1 Answer

My 95 camry won't cold start unless I use starter fluid a couple of times then low rpms til warm up then runs find. Checked spark,iac,throttleprosition,changed fuel pressure bypass

Maybe needs new fuel filter, possibly new fuel pump. Check fuel pressure, low fuel pressure would indicate a problem with fuel filter or fuel pump. If fuel pressure is sufficient, fuel injectors may be shot. Use a stethoscope, or screwdriver, to listen to each injector to check for a clicking sound, signaling that the injector is operating.

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My Mazda mx3 starts up idles for a couple seconds then dies.

Before you replace the fuel pump, I would check the cheaiper parts first. Such as fuel filter and injectors.

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Dodge cummins won't start, fuel reaching injector pump but no fuel coming out of injector pump.

You said you have fuel flowing from the inlet line of the injection pump? But not at the injector lines?

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1 Answer

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Was there fuel pressure before you changed everything? It could also be the pressure regulator sticking or bad. When you crank it over and let off the key you should hear the fuel pump run for a couple seconds and then shut off. If it is doing that then I would be looking to see if you have likes hooked up wrong at the back of the engine or try replacing the pressure regulator.

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