View Single Post
Old 11-19-2003, 12:44 AM
afmcorp's Avatar
afmcorp afmcorp is offline
Registered User
Join Date: Jan 2002
Location: NW Indiana LaPorte
Posts: 571

if the tapping is continuous then you need to be concerned and open the valve covers now before damage can be done to the cam & rocker arm. if the tapping is left alone it can progress and possibly damage the cam. if it's only on startup then disappears in a few seconds maybe just maybe adding a detergent may work

mechanically if it's only a valve compensating element (ball stud or lifter) then for 30$ you can fix it. plus 5$ for the valve cover gasket. a cam costs about 275$ plus 8 new rocker arms etc:.

if you want to try the detergent route try either Marvel Mystery Oil or Rislone would be what i would add. run it a few miles maybe 50 if the noise does not disappear then it's mechanical and needs to be addressed.

i had this exact thing happen on my 88 last year and i left it tap away and it cost me that cam. all over only 1 ball stud.

good luck craig
Thanks Much!

1972 350sl Red/Blk 117k
1988 420sel charcoal/Blk 140k
1987 420sel gold/tan 128k
See My Cars at:

Pound it to fit then Paint it to match!

There is only First Place and Varying degrees of last!

Old age and deceit will overcome Youth and Enthusiasm every time!

Putting the square peg in the round hole is not hard... IF you do it fast enough!

Old enough to know better but stupid enough to do it anyway!
Reply With Quote