Engine knock

[427TJ]

It's definitely a combustion chamber knock and when it does it the idle will stumble very, very slightly. That Seafoam stuff is great and I'm going to get more of it and treat the engine again. I went to two auto parts stores on Sunday--the first one was out of it and I got the last can at the second store. I guess it's popular stuff.

By the way,

[nuch_ss396]

Guys!

Are there any possible bad side effects from the use of
the Seafoam product? I've got way too much money tied up
in some of my motors to ever risk internal damage to the
cylinder walls, etc..

I know the same holds true to all of you as well.
Steve