Cummins 4BT & Diesel Conversions Forums banner
1 - 9 of 9 Posts

·
Registered
Joined
·
27 Posts
Discussion Starter · #1 ·
Hey guy my brother has a 6bt out of a 1997 3500 12 valve. We got to looking at it and #6 exhaust valve is not working. Any ideas? bad tappet lifter or cams gone!?!? Need to get this on the road soon!!
 

·
Registered
Joined
·
1,505 Posts
What like valve not moving or not moving the push rod? Bent valve, cam lobe gone, bent push rod, or broken lifter.


Sent from AutoGuide.com App
 

·
Registered
Joined
·
27 Posts
Discussion Starter · #3 ·
It not moving the push rod. We pull the rod and its straight as a arrow
 

·
Registered
Joined
·
1,505 Posts
All other rods are moving correct? Did this just happen or was this after assembly?

Pull the cam and check it. Either broke or wiped the lobe out.


Sent from AutoGuide.com App
 

·
Registered
Joined
·
27 Posts
Discussion Starter · #6 ·
Damn thats what we thought. Any good place to find a cam at reasonable price? I dont think the tappet lift can just stop working right? As they have no moving parts.
 

·
Registered
Joined
·
27 Posts
Discussion Starter · #8 ·
Alright we will see what happened when we pull it.
 

·
Registered
Joined
·
1,505 Posts
If the flat of the tappet broke off then it could limit movement. Enough to keep the actual valve from opening but would still see movement


Sent from AutoGuide.com App
 
1 - 9 of 9 Posts
Top