LB7 Urgent help..

blk smoke lb7

<-----Lots of green $
Nov 8, 2010
5,694
0
36
57
belvidere,ill
Bent valve?Drop a seat? Put some air to it and see if its coming out the intake exhaust or the oil fill tube,could have floated a valve during the burn out possibly.
 

6cummins

New member
Jun 10, 2013
15
0
1
Gulf Coast, MS
Bent valve?Drop a seat? Put some air to it and see if its coming out the intake exhaust or the oil fill tube,could have floated a valve during the burn out possibly.


Exactly what I was thinking.. Its gotta either be valve train or a spun bearing somehow. Probably gonna just pull the motor and snatch it apart and doing a mild build. But still want to figure out what it is.
 

Burn Down

Hotrodder
Sep 14, 2008
7,092
28
48
Boise Idaho
Hmm, you would think anything holding the valve open or dropping a seat etc, etc would show lower compression on #7... I would pull that head before I yanked the engine. Might be a easy fix, unless your hell bent on doing a build of some sort.
 

6cummins

New member
Jun 10, 2013
15
0
1
Gulf Coast, MS
Well cut the oil filter open tonight and there was quite a bit and some large pieces of metal in the filter. Looks like bearing material. Just going to pull the motor and get it pulled apart. Not sure if its a rod or main bearing. Thinking maybe cam bearing.