2003 altima compression in valve cover

Question

when you take fill cap off valve cover you get compression back at you. no blow by from dip stick does not suck at tail pipe like a burnt valve i replaced the converter made very little difference if any. the old converter had came apart about a 1" piece had broke loose and turned cross ways to partially block pipe. it was driven about 60 miles like this
no engine lights are on assuming they work starts good just smokes after it warms up and a little bit of a miss from the oil i would say

Answer 1

Hi there,

This could indicate there is a problem with the compression rings or with some damage to the cylinder walls. It could also be a problem with the PCV valve. If it's plugged up you will get some pressure from the crank case.