Valve sound

[jondee86]

Adjusting the valve clearances on a 4AGE is not a
simple process like on a pushrod engine. You have
to measure the clearances correctly, then, if they are
out of tolerance, replace the shims that are sitting
on top of the valve lifters.

If the clearances were set correctly when the engine
was rebuilt, it is unlikely that they will be out of
tolerance after only 40,000 km. But by all means
check the clearances to be certain.

While you are in there, check the condition of your
cam belt tensioner idler bearing. I have had a tensioner
making a noc... noc... sound when the engine was idling.
It sounded exactly like a big end bearing knock, and
even had my mechanic fooled for a while.

BTW, a mechanic's stethoscope is handy for tracking
down mysterious noc... noc... sounds :wink:

Cheers.... jondee86