I have a loud new ticking noise coming from the exhaust side of my head which I'm thinking is a lifter. I have 272/272 cams in the car and they have been there for a while, but when I was driving my car hard a couple days ago, it backfired and shot a cloud of smoke out.

I've now noticed that I have this unusual noise in the head which I'm almost 100% certain to be the infamous lifter ticket that the Evo's can get.

If the lifter is stuck - what would I expect to see? would this cause breaking up under partial boost?
...I ask because I have another thread going on a similar but separate topic. Please see:
https://www.evolutionm.net/forums/ev...eaking-up.html

 

If lifter is stuck open, you will have zero compression. Do a compression test.

 

Did one last night. Got 167-169-170-170. I'm thinking maybe the lifter is stuck or intermittently sticking closed and that valve may not be opening. I may pull the valve cover today and see..

 

Bad lifters make noise - end of story.

Don't try starting it with the valve cover off. You will have oil everywhere.

 

Most of the time lifters collapse, which in turn causes the valve to not open at all or open only partially. So a compression test will not show the root cause. Take your valve cover off and examine all the lifters. Check for play in the rockers and make sure all the lifters are operating correctly.

Collapsed lifters tend to cause some knock, along with a significant loss (very noticeable) in power.

 

sorry to revive this thread back from the dead but i've got a question concerning stuck lifters.

say the lifter was intermittently sticking. That would cause the valve to open partially correct? In turn, causing richer afr?

 

I am wondering too. I am thinking I have a lifter that may be stuck as well and the AFR at idle has recently went from mid 14s to 11-12 range.

 

I'm the exact same. I went from 15 to 11-12

 

so uh....was this ever figured out. I'm having a loud noise come from what SEEMS to be the top part of the engine. Gonna do compression test after work today.

It would be nice if people reported what fixed their problem :'(