Re: new lifters - still noisy

[Nick Craft <ncc@scr.siemens.com>]

>> The clicks are at a frequency of about half the rpm's (e.g. 500 clicks per
>> minute at 1000rpm). Engine cold: always present < 4000rpm. Engine warm: barely
>> audible at idle, louder the more you open the throttle, but quiet when cruising.
>> In other words, loudness seems to be proportional to throttle  opening, not to
>> rpm's or to load.
>> 
>And there it is...
>
>Manifold leak. It seals itself up as the manifold warms up. Try this. Do you
>get noise after the car sits for a short while? Probably not. Just in the
>morning, eh? Or perhaps late in the day after the car sits for 6+ hours?
>Check it out.
>
>I had the dealer fix this since I could see how to get to the exhaust 
>without takling the intake and a bunch of other stuff out of there. They
>charged me 2 hours labor plus parts. It would have taken me two trips to
>the local tool store and a weekend.
>
>Bob Kunz
>bkunz@boi.hp.com
>

Damn! I had a sneaking suspicion that it was the manifold, but I was mentally
blanking it out as it's such a horrific proposition.
The noise does sound as if it could be coming from that vicinity, rather than
the valve cover.

Thanks for making me face up to the facts.
Nick.