Hi, I drive an 1999 Audi a6 2.8 have owned it for 3 weeks, drives well.
Oillight came on last week, very surprised. Filled it on Friday is now Thursday of following week, oil level under half way, no obvious signs of leaks no smoke billowing out, occasional clouds of white/grey smoke when idling.
Very depressed, have bought a lemon $12k.
Any ideas ?
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Re: AUDI A6 1999 USING OIL, NO OBVIOUS SIGNS
I'm sorry to hear of your problem. Hopefully you'll find an only an easily fixable leak.
When you drive it get it up to 35mph and let off the gas for 20 to 30 feet or so, then punch it. If you see a large puff of white smoke it could mean valve guides. Also check your PCV valve. It could also be leaking when you drive so you wouldn't see it leak and could be a front engine seal or rear engine seal or both. If you don't have clouds when you're driving your rings may be OK but may need to do a compression check to comfirm. Hope for a bad valve cover leak. Good luck!
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I had the same problem, I researched the heck outta it and this is what I came across. The crank case control valve is bad, the newer models of our car has a lawsuit that was settled, but Audi won't recognize the older models having the same issue. So I complained to the dealer, what they fixed was the vacuum pump which was covered under my warranty. It's too early to tell if it fixed the issue it's only been 1 week. I hope this helps.
Engine mounts do not go bad in five miles. Sounds like you're treating a symptom and not the cause of a more serious issue. Are you sure all cylinders are firing correctly? That the severe knocking is not coming from your engine internals? Have you checked the steel around the engine mounting points for cracks or other damage? And just in case, if the mounts you are using are poly, are you lubing them before installation?
Same here....I soon had the same problem after changing the oil..Found out after many tests and research that auto parts stores cross reference a lot of audi oil filters to the vw counterparts..Which do fit audi,but are shorter and lack the oil capacity to feed the engine.Then the pressure light pops on!!!! make sure the larger/longer oe type is installed.If your not sure buy it from audi its not much more than the napa brand.
Audi had alot of issues with coils over the past 10 years. Especially with the 1.8t. If you have never had your coils updated I would look into that. Most cars that have original coils from factory need updated ones installed.
2 things here, using oil & white smoke,
1. i would use a product made by seaform called motor tune-up, you can get at napa,autozone or kragen, pour contents in oil and drive normal, this product is real good been using over ten years it will clean all the carbon around the rings & pistons and also clean lifters,sludge in motor, run in for about 3 weeks then change oil stuff costs about $ 9.00
2. White smoke out exhaust is either automatic transmission fluid from transmission or slight head gasket problem
I hope that you had the proper weight oil installed, at your oil change. If your oil is up to the proper level, and it's rattling ,this is VERY bad. White smoke usually means steam in the exhaust, and that means a blown head gasket. Check your coolant level. I wouldn't drive it anymore......until someone knowledgeable can diagnose it!!!!!
It could simply be maybe the person changing your oil never reset the light? or you have a oil pressure sensor leaking or not working.
most of the time its someone never reset the oil change light. even before it goes on it goes by mileage, so maybe it didnt go off yet cause you cnahged it a tad early.so noone even tried to reset it.
I guess you could have an oil pressure problem, but thats going the extreme route.. but if nothing else shows that could be a problem.