Post by
hessianben »
https://forums.nicoclub.com/hessianben-u49684.html
Fri Oct 12, 2007 10:16 am
Ok, now this sounds really stupid, but i've had problems with the my current ka24de and my last ka24e ticking from the #4 cylinder. Changed the oil even more often and added lucas oil, which would quiet the noise for a day or so...but it always came back.
Ok the stupid part: I got new plugs and in before i replace them, i rested my hand on the plug cap for the #4, and it was "thumping" with each fire. I replaced the plug (which WAS loose), snugged it down, and when i started it up, no more tick!!!
In my old single cam, I had actually blown the #4 plug completely out of the valve cover, and had to have it re-tapped!
The aluminum in the valve cover is really soft, especially when it is hot, so I'm thinking that if the plugs get over tightened, they may actually tweak the threads and cause the plug to walk itself loose.
Could poor plug seal account for low compression as well?
It sounds stupid, but if you haven't already snugged the plugs, (not too tight) try it. I'm glad I did that before replacing the lifters!!
Let me know what you find out!