ORIGINAL: Gray Beard
A brand new engine or a worn out old engine tend to blow out little ground up metal bits that seems to end up going through the pressure line into the fuel tank. I have never seen it so bad that the engine goes dead stick from it but what the heck,...
If it's a new engine then it will go away by about the first gallon of fuel used. If it's an old engine wearing out then it will just get worse with use.
Like he said!
I've never found a PTS nor 2 stroke Evolution engine where this did NOT happen.
The gray shavings will eat up your plugs too.
Consider letting the engine just run at mid throttle on the ground for 3-4 tank fulls.
This will get rid of most of the particulates that get shaved off.
Most of the particles seem to come from the rear of the crank shaft rubbing up against the back cover plate.
I wish Evolution would just insert a gasket or spacer in there to fix this problem.
It does go away by itself after the engine is run, but this should not be needed!