I'm not liking any of this Mike:( you should be able to see something obvious. Your description on the ph still sounds like a serious compression blowby problem, never have I seen a 4bd1 spit oil out of a dipstick tube , especially one fitted with a provent....and coupled with the roughness and knocking...Not sure what to think at the moment as all the other suggestions have merit, too. :(
Hope it hasn't been in vain :mad:
JC

