superdave
Proud NOOA Member
- Joined
- Jan 26, 2013
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On the noise at start up, search for piston slap on this website. Many of us have the same thing for a couple of seconds and it doesn't seem to have any adverse effects.
The PCV valve was a good check. They can certainly cause this issue. Stuck rings is another thing that can cause a problem. There are lots of methods/ideas/snake oil ways of trying to unstick those. Valve seals is another heavy contributor. If these or leaks aren't the issue, plain old wear and tear is the killer.
You need to do a compression test first, which is like going to the doctor and getting your vitals taken.
The PCV valve was a good check. They can certainly cause this issue. Stuck rings is another thing that can cause a problem. There are lots of methods/ideas/snake oil ways of trying to unstick those. Valve seals is another heavy contributor. If these or leaks aren't the issue, plain old wear and tear is the killer.
You need to do a compression test first, which is like going to the doctor and getting your vitals taken.