Dennis,

Hmmm. I think it very wise  to avoid a lean cylinder. Having your piston
slap could be painful! :'(

Is it still Frydaye?? :-)

John Rodgers
88 GL Driver x2

Dennis Haynes wrote:

>Maybe you have a lean cylinder.
>Last possibility is maybe you have piston slap.
>
>Dennis
>
>-----Original Message-----
>From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
>Of Michael Diehr
>Sent: Friday, March 03, 2006 6:50 PM
>To: vanagon@GERRY.VANAGON.COM
>Subject: Knock & Ping?
>
>Hi Folks,
>
>I have a new engine still in the break-in period, nearly to the 500
>mile oil change.
>
>I've started driving it harder, but I'm worried that I'm hearing
>knocking / pinging under load at high RPMs.   I'm very familiar with
>how the VW inline-4s sound when pinging, but not so sure about the
>wasserboxer.   Are they prone to it like the i-4s?  The sound i'm
>hearing is pretty subtle, but that may be due to road noise covering
>it up.
>
>If it's not pinging, is there some other high frequency noise that
>might be coming at very high throttle / high load?
>
>
>
>