01 Surburban Sudden Engine Tap/Knock
December 28th, 2011, 12:53 PM
#1
New User
Awaiting E-mail Confirmation
Awaiting E-mail Confirmation
Thread Starter
Join Date: Dec 2011
Posts: 2
Likes: 0
Received 0 Likes
on
0 Posts
01 Surburban Sudden Engine Tap/Knock
Started my Suburban today and got a knocking tapping sound from up high in the engine. This is not the cold start sound that goes away. This is slightly louder, in sync with RPM's. No drop in oil pressure. Has 135K miles. Any insight as I am trying to get idea of what it might be and the potential cost.
Thanks
Thanks
December 30th, 2011, 7:45 PM
#2
CF Beginner
Join Date: Dec 2011
Posts: 11
Likes: 0
Received 0 Likes
on
0 Posts
Possibly anything in the valvetrain. Loose rocker, bent valve, bent push rod, valve lash could need to be adjusted going back to the loose rocker, could be a lifter. A knock in the bottom end is easier to narrow down for you 
.
.
Thread
Thread Starter
Forum
Replies
Last Post
