Cam Diagnosis ?
Thread Starter
Instructor
Joined: Jul 2004
Posts: 143
Likes: 1
From: Dallas TX
Cam Diagnosis ?
I am wondering if there is an easy way to check if a camshaft is operating properly or if the lobes have worn down. The L98 seems weak and it reminds me of a problem I had with an old 82 firebird v6.
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
is it ticking real loud?
That's a good test... the best way is to remove the valve covers and check the motion. Are they all opening the same amt.
There may be other ways, but I do not know what they are.
That's a good test... the best way is to remove the valve covers and check the motion. Are they all opening the same amt.
There may be other ways, but I do not know what they are.
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
What year? On flat tappet cams, a flat or wiped out lobe can make the combustion charge come back thro0ugh the intake making a popping sound. I'm sure it has happened somewhere, but rollers usually don't go flat. If one fails, you'll know "right now".
What symptoms have you thinking its the cam? Any codes? Have you done a leakdown/compression test? Just curious
What symptoms have you thinking its the cam? Any codes? Have you done a leakdown/compression test? Just curious
