Quote:
Originally Posted by c4racer
oh - it can't be that bad. On the 4.2L V8 in my S4 the chains are on the back of the motor. So guess what it takes to get to them? You guessed it - motor pull.
Typically this isn't a problem, but if you have a rattling at start-up that could be the chain guides and you will need to replace them. Generally it is a replace only when they fail kind of deal. And if you get to it soon it should not do major damage to the motor. Notice I say "should". Anything can happen with a mechanical system...
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Yeah, but does the Audi 4.2L have the same potential timing chain problems the BMW 4.4L have?
Don't forget, rattling at startup can also be a VANOS issue, which is a very common problem w/ the entire M62-S62 line, which is all basically the same block anyways.
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650hp 10 X5///M - Stage 2, Vibrant 1794's , gutted cats, custom intake, AC Forged 22's 325hp 98 BMW 740iL - ///M5 6spd, www.bavengine.com w/ Performance Option, electric fan, CF intake tube w/ heatshield, Mag 14816 w/ notched bumper, Bilstein/H&R Stage II/Powerflex 600+hp 02 Harley F150 - MHP900 Stage 3 engine, KB2.3, 8# lower, 60# inj, Walbro FP's
135hp 01 TL1000R - M4 full exhaust, K&N, Yosh box, -1/+2 gears, 2CT's
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