Question about 2002 Audi A4

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A4 2.0 miss fire

Hi recently bought an a4 2.0 petrol which has started to miss fire bringing on the engine light any clues to what i need i use to have a lot of old cars where i would change the plugs and leads but the leads look a lot diffrent can i still do this ???????? also it seems to use a lot of oil ?????
thanks

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  • ryanelectric Aug 27, 2008

    thanks changed plugs no change going to change coils today air filter and fuel filter let you know what happens thanks

  • ryanelectric Aug 27, 2008

    thanks for help it was the coils that needed replacing thanks for help any ideas why it uses so much oil ??????????

  • Bethany Moreau
    Bethany Moreau Sep 14, 2008

    I had this very same problem - misfiring and the check engine light coming on. Changed & gapped the spark plugs, changed the coils, fixed the big problem. Also, changed the fuel and air filters, just to be sure of things. However, now intermittently I still get the same hesitation. I got it once upon a quick acceleration from stop to go where the check engine light came on for a brief 3 seconds. Another instance occurred when I was, again accelerating, but uphill and right about as my turbo would probably kick in. That time I got the same hesitation, but without a warning light. These two instances happened recently within a week and a half or so of one another. I didn't feel like paying the $90 to have the dealership check the computer... I figured I'd see if anyone here could help me out before I go there for help.

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The four-cylinder Audis are known to have issues sometimes with the coil packs. Can you have your car's ECU scanned for fault codes? You may have a stored code even if the check engine light isn't on. If you have no codes, I'd look at changing the plugs at the very least, and make sure they're gapped to factory spec. Then get some Seafoam at the parts store and do the vacuum system with it - see if that helps, and if not, post back up and we'll take it from there.

Posted on Aug 26, 2008

  • Jeremy Dellow
    Jeremy Dellow Aug 27, 2008

    Glad the misfire is handled. As for the oil consumption, take a look and see whether you have a leaking valve cover gasket. Look around the base of the cylinder head and see if you have oil streaks on the engine. Also, you can pull out a spark plug wire and see if there is oil on it - if either of these is the case, you probably have a leaky gasket. I replaced the gaskets on my 2.8L A4 in about 30 minutes (it's not a hard job to do), and the parts will run you about $25 plus shipping from www.ecstuning.com (great company to deal with - I've bought a couple thousand dollars worth of parts from them and have zero complaints). If you do have evidence of oil leakage (which does happen on these cars), let me know here and I can send you a link that will help you with changing the gasket.

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That same thing happened in my 01 a6 and it was very pricy! if i was you i would stop driving it immediately! i made that mistake and cost me $6432! i had to replace things in my engine and it fried bothe o2 sensors and both cats but especially if the light starts flashing thats bad news for you but i would reccomend taking it to a shop. your call

Posted on Nov 18, 2008

  • gmdaboss89 Nov 18, 2008

    o and one more thing the guy that said about putting a new coil in it thats what they thought it was to but it wasnt just that it was a list so i wouldnt just rely on hoping that it is just a coil

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Hey J_del,

I just purchased a 98 Audi A4 1.8T. I was checking the spark plugs and noticed that the wires and the spark plugs had some oil on them. Im assuming this is the gasket as you said. Could you post that link for me. Also i checked the oil and it seems whoever did it overfilled the oil (Could this be the cause as well?) In any case i am going to drain some oil, as too much is bad.


Posted on Aug 29, 2008

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