Question about 1998 Audi A4

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Re: Audi A4 Missfire

I have a problem that you described in this post. I have an Audi A4 1.8T (1998) and was checking the spark plugs and noticed some oil on the wires and spark plugs. Could this be the gasket problem you addressed? Also the mechanic that did the oil change overfilled it (could this be the cause as well?). Anyway could you send me that link about changing the gasket.



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  • chad_h Aug 29, 2008

    Thanks for the help.

    Just wondering how quickly should i be fixing this problem? My engine isnt misfiring; it still runs with a lot of power. What i mean is should i put off driving until this is fixed or can i continue to drive until i get the parts and time to fix it (approx 1 month).

    Also as for the oil, it is about 3/4" past the full marking on the dipstick. Is this ok?



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Sounds exactly like a valve cover gasket problem. The parts run less than $30 from or - I've dealt with both companies and they're excellent. How much was the oil overfilled by? If only a half-quart or so, don't sweat it. If it was more than that though, I'd drain some off, check the level, then top it back off to the proper amount. Too much extra oil creates excessive crankcase pressure, which can push oil out past the seals. That could be why it leaked, but if you have a 98, there's probably enough age on the gasket that it would be a good idea to change it anyhow - it's cheap and easy enough to do.

As for changing the gasket, here's the link that'll show you how to do it:

This was based on a 2001, but it's still a B5 chassis car. The engine is somewhat different but overall the same steps should carry over. Let me know if you have any questions and I'll help you out with it.

Posted on Aug 29, 2008

  • Jeremy Dellow
    Jeremy Dellow Aug 29, 2008

    You don't have to stop driving the car - it's fine to drive it as long as you keep an eye on your oil levels. I'd still drain off a quart of oil though, then check the dipstick, adjust the amount of oil as necessary, and then drive. Too much extra oil will make your valve cover gasket leakage worse, and may start forcing leaks through other seals as well (worst case would be a rear main seal, as you would have to drop the transmission and remove the flywheel to access it).

    You'll be fine driving around, but remember to check the oil every few days, top it off as necessary, and when you do change the gasket, you may want to change (or at least clean) your plugs as well, since oil seepage through the gasket around the spark plug holes may start to soak the plugs down.



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