[V8] Oil leaks and audiv8.com
Paul Jager
pjager at telus.net
Thu Dec 22 11:11:57 PST 2011
Ha ha - I made an elaborate turkey tray system to keep oil off the exhaust.
Still in there doin' the job!
pulled the engine tray
We also re-torqued the head bolts and by using the low viscosity oil it's
been pretty good.
-----Original Message-----
From: dsaad at icehouse.net
Sent: Thursday, December 22, 2011 10:08 AM
To: v8 at audifans.com
Subject: Re: [V8] Oil leaks and audiv8.com
I think some sort of precision engineered engine diaper would be a big
seller...
Dave
>
> Hey guys
> My 4.2 when I bought it was leaking oil all over the place and so when I
> did the timing belt I replaced every seal I could. I found that the
> biggest oil leak was caused by Head gasket oil leak ... it would migrate
> down to the exhaust system and I'd get the " hey your car is smokin
> comments" The only way to tackle oil leaks is replace as many of the seal
> as you can in one shot when you are doing the tbelt. I took both heads off
> and replaced all the valve seals and hand lapped the valves. I didn't
> replace the valve guilds and this was something I should of DONE. The Head
> Gaskets have been fine and held up very well for the last 4.5 years. Redo
> all the Distributor seals is important too as that can be a source of oil.
> What I did do to stop the smokin was to build a spill tray that diverted
> the oil from my exhaust system, until I could find the time to do the big
> job.
> superdave
>
>
>> From: pjager at telus.net
>> To: v8 at audifans.com
>> Date: Wed, 21 Dec 2011 22:30:21 -0800
>> Subject: [V8] Oil leaks and audiv8.com
>>
>>
>> Some guys over there really know V8's - take this post for example. The
>> valve seals are pretty easy to test for. Start the engine cold, run for
>> only
>> 5 minutes, shutdown. The restart 24 hours later - holy smoke show.
>> Getting
>> the motor up to operating temp the oil will take the correct path out of
>> the
>> heads. Took me a while to confirm my oil leaks were the heads, there is
>> a
>> pipe very close to the end of the head. Using 5W20 oil helps with that
>> leak
>> because oil pressure is reduced.
>>
>> That's why I call it the Exxon Valdez - let 'em burn!
>>
>> " the ABH engines are a bit infamous for burning oil - sometimes more
>> than a
>> gallon per 1000 miles. Keep an eye on the consumption - if it's below
>> two
>> liter a 1000 miles, it makes sense to overhaul the heads. If it takes
>> significantly more, save the money, let it burn. Something more serious
>> and
>> in most cases irreversable causes the oil burning.
>>
>> The ABH are as well famous for blowing the head gasket on the back end
>> of
>> the left head and the front end of the right end. Take a look on the
>> alternator, it is probably already oily. In both cases changing the head
>> gasket is the only way to go.
>>
>> If you plan to replace the vavle seals, it is highly recommended to
>> clean
>> and refit the valves as well, 'cause in most cases oil carbon has
>> already
>> settled on them, wearing your new seals out in no time. A look inside
>> one of
>> the cylinders (probably the one with the most oil carbon on the spark
>> plug)
>> with an endoscope could give you a hint about the need of a vavle refit.
>> Maybe taking away the heads becomes a requirement anyways.
>>
>> In your case I would visit your local Audi dealer and gently ask for the
>> tools required for pressing downholder of the valve springs - they may
>> have
>> the timing belt tools as well for a box of beers
>>
>> Maybe I meet the trouble halfway, but experiences told me that oil leaks
>> and
>> consumption on the ABH are often a never-ending or at least enerving
>> story.
>> As you seldomly stress the engines in the UK due to strong speed limits,
>> chances are good that you don't have that much troubles as we have 'em
>> on
>> some engines over here. But still you should be careful to not spend
>> money
>> for nothing."
>>
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>
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>
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