Sounds like the rocker arm bushing(s) is/are worn. Or maybe/also
the shaft. When this condition exists, the rocker shaft preload can't
make up for the slop and you can't get repeatable valve lash.
Check each rocker arm for wobble on the shaft with its valve closed.
Also check each rocker's adjustment by setting the lash, then spin the
engine through and recheck. When you adjust the valves, you should
always go back and recheck each one after you're through anyway.
There's one othe possible cause which relates to the cam flexing in
case of worn cam bearings.
Cheers,
CR
> On Wed, 10 Mar 2004 18:22:10 -0500 "Dean T. Lake" <dtlake@erols.com>
> writes:
>
>>So I've adjusted and re-adjusted valve lash and can hear what sounds
>>like one loud rocker. Why would this be the case? Do I just need
>>to
>>re-evaluate how I'm doing the job, or is there some other possible
>>explanation?
>>
>>Thanks,
>>
>>Dean
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