lifter noise

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jim - 24 Nov 2004 02:31 GMT

I have a 1986 944 that has developed a pecking sound coming from the
engine. This occured after replacing the valve stem seals. I cannot
figure out what is causing it. If anybody has any info please let me
know.
Thank you.

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George Hamilton - 24 Nov 2004 22:23 GMT

Your mechanic probably did not put the tappets back into their
original position in the cam housing. One of them is probably
sticking. Try some valvoline motor oil. Cured a similiar problem I
had. Otherwise get a stethoscope and zero in on the problem
tappet/valve.

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jim - 25 Nov 2004 15:46 GMT

> Your mechanic probably did not put the tappets back into their
> original position in the cam housing. One of them is probably
> sticking. Try some valvoline motor oil. Cured a similiar problem I
> had. Otherwise get a stethoscope and zero in on the problem
> tappet/valve.

Thanks for the info. What kind and weight of valvoline do you suggest
and how long should it take for the noise to calm down? Again,
thanks.

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jim - 25 Nov 2004 15:58 GMT

Thanks for the info, If the lifters have been put back in out of
sequennce will changing the oil correct the problem and what
kind/weight of valvoline do I need? Thanks

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George Hamilton - 29 Nov 2004 18:38 GMT

I would recommend 30 single weight depending on where you live of
course. If in cold weather zone use 20W-50. It may cure the problem.
You will know right away if you have a cure. Otherwise try living
with it for a while and see what happens. If it is affecting the
operation of the engine you need to shift the tappets around before
you burn a valve.

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