Hello

A freind of mine just rebuilt his M104 in his 98 S320, The engine appears to run well up until it reaches the RPM where the cam advances. Then it makes a noise posibly as if the valves are hitting the piston. Ive posted a vidio of the engine running with and without the cam adjuster connected. Has anyone observed this behavior.

Thanks in advance

http://www.youtube.com/watch?v=6QbU3xeYzpM

__________________
To see my 129 parts for sale visit:
http://stores.ebay.com/The-Mercedes-SL-Store
John Roncallo

If it sounds like the valves are hitting the pistons, there's a good chance they are. Was the head resurfaced? Was the cam timing set accurately?

That's not a good sound.

__________________
http://i193.photobucket.com/albums/z...-RESIZED-1.jpg
1991 300E - 212K and rising fast...

Was the timing set with cam in retarded position of the adjuster?