When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
yea eventually i found the problem.....
i had a miss fire in cylinder 4. the problem was a bent pushrod. guess i didnt seat it properly durring re assembly... after compression tests it showed everything was all good and i got lucky that i didnt bend a valve.