Hmmm Its A Bit Noisy..pneumatic Controlled Engine Taps?

[Phonophobia]

hey hey

still loving the lexus experience!

the clock needle problem is soon to be sorted, thanks for the help everyone.

my next thing (suppose its what i get for buying a used car), the engine is knocking a bit (sounds like a tappet is out of sync), i called my mechanic who proceeded to tell me that you dont tune a ls400 its pneumaticly controlled and it will sort itself..... iam confused, iam no mechanic but it all sounds a bit iffy

Any one have any ideas? its a smooth as silk but its annoying me

thanks

Mark

[adz]

i called my mechanic who proceeded to tell me that you dont tune a ls400 its pneumaticly controlled and it will sort itself..... iam confused, iam no mechanic but it all sounds a bit iffy

He's wrong about the pneumatic valve lifters. The LS has buckets and shims and needs adjusting. It's quite a big job as well. Try doing a search as there have been a few posts on this subject before. Also your mechanic probably meant hydraulic rather than pneumatic (he was still wrong though).

[moriwaki]

If your mechanic didnt know how the valves are adjusted...{especially the pneumatic thing}...best find another shop I think

[ROYT]

Sometimes just a change to some top quality engine oil helps quieten the tappets.....have u tried it?