Question about 1996 Chevrolet Blazer

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Wont' start engines turns over when ignition engaged seems like no fuel getting to spark plugs were replacing the fuel fliter now

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Fuel filters do not clog up like they used to because unleaded gas is so clean.You should try the fuel pump relay first.Greg

Posted on Feb 23, 2011

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  • 2 more comments 
  • mark_mazel Feb 23, 2011

    Ok Greg. I need to locate the fpr I will look on the computer.

  • Greg McCarthy Feb 23, 2011

    You may not be able to find the location in a manual on the internet.You can try Chevy forums of which there are many.You can also call a shop(AAA approved preferably if in USA) and they will normally tell you for free.(It helps bring back business)

  • mark_mazel Feb 23, 2011

    It was in the glove box in the back with two other relays. I swapped em and truck still will not start. I opened steel fuel line at intake and it is pressurized fuel is there. but truck still won't start. relay is probably ok right?

  • Greg McCarthy Feb 23, 2011

    Yes.Do you know if you have spark?To check,remove one of the plugs.Plug the wire back onto it and hold the small curved end somewhere against the engine block,AWAY FROM THE EMPTY SPOT YOU REMOVED IT FROM.Hold it by the wire end.Have someone turn over the engine.You should see it spark even in daylight.

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96 chevy cavalier 2.2 turns over but wont start have changed the following: fuel pump fuel filter map sensor crank shaft position sensor ignition module ignition coils plugs wires ran a ground from...


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Car wont start


Hi,
If the engine cranks over normally when you attempt to start you car, but the engine does not start, the problem may be NO FUEL, NO SPARK or NO COMPRESSION. The engine needs adequate fuel pressure, a properly timed spark and normal compression to start.


1) To find why the engine won't start, remove the air inlet tube from the throttle body, push the throttle open and spray a small amount of aerosol starting fluid into the engine. Crank the engine. If it has spark and compression but NO FUEL, it will start and run a few seconds before dying. If it does NOT start, it probably has NO SPARK.

2)Another method to check for spark is to pull a spark plug wire off of a spark plug (if it has plug wires, coil-on-plug ignitions do not) and place the open end of the plug wire near a metal surface on the engine. Have a helper crank the engine while you watch for a spark. DO NOT hold the wire while doing this as it can shock you. If you see a spark, the problem is not spark, but most likely NO FUEL or NO COMPRESSION. If you do not see a spark, the problem is in the IGNITION CIRCUIT.

3)Proper fuel pressure is critical for fuel injected engines to start and run. You should hear the fuel pump inside the fuel tank buzz for a couple of seconds when the ignition is turned on (no buzz means the pump is not running and the engine is not getting fuel). You can smell the tailpipe for gasoline vapors after cranking the engine. If you smell gas, the problem is likely not fuel but NO SPARK. You can also remove the plastic cap and press the schraeder valve test fitting on the fuel rail to see if there is any fuel pressure to the engine (not a very accurate test because fuel pressure must be at a certain level for the engine to start, for that you need a gauge). Even so, no fuel at the fuel rail would tell you fuel is not getting to the engine..


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