

I just wondering what your thoughts are on these plugs that I took out last night's on me gen 2 3SGE.


https://flic.kr/p/2gxaemY

Some issues I've had with my gen 2 over the past few years that is slowly getting worse, one is when I start it from cold it will chuck out a load of smoke then clear, if I take the rpm up its still clear but when I snap the throttle take it up to 4k then let off smoke shoots out I've noticed the top of the pistons especially cy 2 and 3 are caked in wet crud the other 2 look reasonably clean, compression test done and all 4 are well above spec, could this be valve seals?