Chainsaw Repair

I remember when we first started using BelRay oil in the race bikes in the late 60s, it scared the chit out of us all because we were not getting nice 'MilkyWay' brown plugs. After much discussion with BelRay folks we found out that we would never get the color we were used to, they said that the synthetic stuff burned so much cleaner than the Torco T2 we were using that we would probably only get a medium tan/brown color plug.

That being said the gray still scares the hell out of me. With the E10/XP oil I was getting a nice brown color.

Well, I put it in wood. The saw did not blow up. Was idling at 2700 12500 WOT. Cut three cookies with it, ran pretty good. Took it into the shop pulled the plug.......pure white! Surely it must be an air leak to make it do this. Pulled the saw apart again and did another pressure/vacuum test. Started with 80KPa to 4.5 minutes to get to 60 Kpa. Did Vacuum test 60 Kpa close to two minutes to get to 50 Kpa.

Has got to be an air leak somewhere but can't find it, only things left to test are the carb spacer.

If the saw is 4 stroking at wide open throttle and you hear it clean up when put into wood I would not sweat it.

It would not bother me if the plug was green as long as I hear a good 4 stroking.   

LOL

I just changed premix oil just a few months back and I was worried about the carb settings myself on all my saws I couldn't get one saw to run right thinking it was a oil problem then I changed my fuel and impulse line and everything was a oh k 

I had a **** fuel line on a 60 cc saw

Sounds like the high speed nozzle check valve is blown in the carburetor?

Sir James Winningham WINNS! Jim send me your address, I will send you a saw to play around with!
 
I dug around and found a new carb, switched carbs, everything is as it should be. Will put B/C on it in the AM and see what happens. Did not take the carb apart, was so pizzed off, just changed the carb and gave it a shot. If it runs well in the AM, I'll start trying the other brands of fuel.