Cm870 running on back 3 cylinders

[Rawze]

You know this thread crossed my mind today, ...

I remembered one time about another CM870 that went to Mr.Hags shop, that would not run for s#it on the front bank.. especially cylinder #1 and #2.

I went over there to help find the issue and we ended up pulling the intake manifold, ECM and cooling plate, etc. off the intake side of the head.

We found the intake of the head behind the ecm cooing plate was so totally packed up with carbon and soot, that it was causing cylinders one and 2 not to be getting any air much at all into their intake valves. #3 did not look much better.


Just a thought. Seen a CM871 like that once too.