Question about 1996 Buick Skylark

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How do you know if your spark plugs are the problem?

While driving, the car starts jumping, or acting like its going to lose power.

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Bad spark plug or bad wire will cause one cylinder not fire cause engine to surge.but change spark plugs and wires, if engine still surge have fuel filter changed, check fuel pressure weak fuel pump will cause engine surge.if you see check engine light flashing code scan for faulty TPS SENSOR OR FAULTY FUEL INJECTOR OR BAD IGNITION COIL.FAULT IN THE PCM.

Posted on Sep 23, 2012

  • 2 more comments 
  • Melissa Parker Sep 23, 2012

    Which should I check first, the spark plugs, or oxygen sensor? The o2 sensor has been out since I got the car. It's Bank 1, Sensor 2.

  • Jonah Oneal Sep 24, 2012

    that could be the reason car not running good the coolant temperature sensor and oxygen sensors are the in put sensor they both control fuel exhaust emission.when engine exhaust and coolant temperature sensor get certain temperature they cause cold engine to lean out fuel mixture as engine get oxygen sensor will cause engine stay open loop causing rich mixture fouling out spark plugs which make engine run poorly,need to replace oxygen sensor first see how engine works, if spark plugs and wires have a whole lot of miles on them it would not hurt to replace them.

  • randymanfive Jul 04, 2014

    If you want to verify the plugs are bad, pull one, or several. Look at the point and verify it isn't rounded, burned off, black or oily. It should have a nice light tan color and have no oil or carbon build-up.

  • randymanfive Jul 04, 2014

    Check your cap and rotor. I think this car still has those items, and they go unchecked.



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Posted on Jan 02, 2017



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SOURCE: car loses power after driving

Have you checked the diagnostics with a simple Scanner yet? This sounds like an Oxygen Sensor going or gone bad. The Scanner will tell you. If the Scanner says 'all normal', and the fuel system indicates 'CLOSED' status, check fuel pressure with a fuel pressure gauge. If the fuel system indicates 'OPEN', check the Fuel Safety Switch wiring, inside and out, the Fuel System Relay, and the Fuel Pump. Sorry, but the ethanol in the gas is creating an entirely new class of problems.

Posted on Aug 04, 2011

mike mountain

  • 1916 Answers

SOURCE: Car won't start, acting like its out of gas,

If it is getting fuel and spark, the only other things it requires is air and compression-You may have an engine so flooded that it won't start in spite of it having fuel now. You can try holding the gas petal to the floor while cranking it, it will dry out the intake and cylinders, but it is best to do this in short spurts and have a battery charger or jumper cables connected to the battery while doing this. Remove a plug to see if it is soaked-if it is, you might want to consider removing all of them and drying them off. While you have a plug, or plugs out you should be able to determine if it has god compression by cranking the engine, the open cylinder will 'pop' as it reaches top dead center if it is alright. Check to see if your oil is unusually high-could be diluded with gas that has washed down the cylinder walls. You can also try to spray some starter fluid into the throttle body, even if the plugs are wet it should try to start if it is getting spark.

Posted on Jan 03, 2011

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