SMCT
Active Member
If it's burning 3 parts in the chamber (air, fuel, oil) the oil will elevate the chamber temp and give that exhaust valve that white look that many see. Not uncommon. The fuel deposits seen on the back side of the intake valve is mostly due to poor fuel shear as well as an engine that is not scavanging correctly from reversion due items such as too much volume from the back side of the intake valve to the throttle blade in the carb. The split, not enough, in the camshaft events otherwise known as "duration" is incorrect on most all of these profiles offered. It shows from the leftover contaminants in the chamber which backs up through the intake side. With all said so far, now you take your contaminants from combustion that have rushed past the ring package and recycle them back through the carb with a breather hose, and that is what you would call a brilliant design. For those who have caught on "brilliant design" was sarcasm.
I would suggest not to try to band aid anything (moving jets around, air bleeds) until it is mechanically stable again. It will be a completely different ball game once repaired.
I would suggest not to try to band aid anything (moving jets around, air bleeds) until it is mechanically stable again. It will be a completely different ball game once repaired.
