Question about 1996 Chevrolet Astro
I have a 96' Astro that I am having a cold-no start/flooding situation! My question is, if the fuel pump is failing,....could it cause it to flood on cold starts? I have replaced the distributor,coil,ign. module,coolant temp sensor,plugs/cap/wires, new MFI Injector/Pressure Reg.,fuel filter ,Cleaned & checked the EGR! IfI mess with it usually for an hr or so trying to start it, It will usually start( I have blown off 5 new muflers in the last year with this! After I get it started & let it run for a while It will start the rest of the day just fine. But, Next morning(after it sits all night) It is the same problem( Flooding & just chugs & backfires sometimes! HELP!!!!!!! My curiosity on the fuel pump is because if I just jump in it & crank on it, it will not even fire,....If I wait the 2 seconds for the fuel pump to stop, it will at least chug( but not start) ! Tapping the key repeatedly for 1/2 an hr or so, is usually the only way i can get it running!
With the upper plenum removed and spark disabled turn on the key and allow the fuel pump to prime while watching the fuel lines from the back of the intake to the injector. I suspect you lines are leaking. Have seen this before. ALOT.
Posted on Nov 27, 2008
I have the exact same problem and too have replaced everything. Have you had any luck yet? My van will only start if I bump it too. I am at my wits end. Freind that I used to work with at the chevy dealer says the 4.3L have problems with the valves sticking and has done valve jobs on a few of them.
It runs so dang good when it starts I have a hard time believing it. Once started will be fine all day just like you. Plese respond and tell me what you have found. Thanks Turbinepwr
Posted on Nov 02, 2009
You will need to replace the fuel pump and check the wiring on the pump.
Posted on Jan 10, 2009
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Posted on Jan 02, 2017
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