1996 Chevy S-10 collaped valve lifters

REJOHNSON37

MEMBER
1996 CHEVROLET S-10
6 CYL
2WD
AUTOMATIC
65,235 MILES

Engine was running good, and all of sudden it begin to miss real bad and bad noise which sound like lifters.I took covers off and about 50% of rocker arms was loose, but nuts where tight, qil pressure was good and oiling. I took intake off and have about 9 collaped lifters. What could cause a problem like this. Thanks Robert n.C.

1 Reply

MASTERTECHTIM

MECHANIC
4,749 POSTS

Did you lose oil pressure? First thing is loss of oil pressure but if thats was ok then replace the lifters, I just had one yesterday that was a 2000 blazer with a intake manifold leak (coolant internally) and the lifters were collapsed on most of them and it was clattering so I installed new lifters when I replaced the intake gasket and that took care of the problem, I dont know if the intake gasket had anything to do with it but thats the second time I have had to replace lifters in a gm engine for making noise and in both cases thats all it was. Hope this helps. They have made a new updated intake manifold gasket for this engine to do away with the plastic factory ones, felpro has a set make of metal and hard rubber, I strongly suggest using them.