SteveSr
Addicted to ArboristSite
Hello,
Before you hurt yourself jumping to conclusions... Here is the full story. Saw was completely rebuilt. Carb is a Walbro Wt-22C and was run through the ultrasonic before being completely rebuilt. The fuel hose is brand new OEM (Stihl). The fuel pickup, also Stihl, looked good so I decided to reuse it.
Saw ran good through 1 tank of gas. After I refilled it I had a hard time getting it started and after I did it acted significantly fuel starved. At WOT it would burble for a couple of seconds before the RPMs started to climb. In retrospect this was the metering chamber emptying faster than the pump could refill it due to the sludge that I later found in the carb screen.
When I got home I pulled the carb out and found some gray sludge in the carb screen. I cleaned the screen over an empty tuna can. When I looked at the can today I found a light gray powder.
So considering that everything was cleaned pretty well I am obviously trying to figure out what this powdery residue is and where it came from. The new fuel line had this white powder on the outside of it. I didn't look at the inside of the line. Since the carb was US cleaned I don't think it came from there. This leaves either something in the tank or something in the reused fuel filter.
Any thoughts?
Thanks,
Steve
Before you hurt yourself jumping to conclusions... Here is the full story. Saw was completely rebuilt. Carb is a Walbro Wt-22C and was run through the ultrasonic before being completely rebuilt. The fuel hose is brand new OEM (Stihl). The fuel pickup, also Stihl, looked good so I decided to reuse it.
Saw ran good through 1 tank of gas. After I refilled it I had a hard time getting it started and after I did it acted significantly fuel starved. At WOT it would burble for a couple of seconds before the RPMs started to climb. In retrospect this was the metering chamber emptying faster than the pump could refill it due to the sludge that I later found in the carb screen.
When I got home I pulled the carb out and found some gray sludge in the carb screen. I cleaned the screen over an empty tuna can. When I looked at the can today I found a light gray powder.
So considering that everything was cleaned pretty well I am obviously trying to figure out what this powdery residue is and where it came from. The new fuel line had this white powder on the outside of it. I didn't look at the inside of the line. Since the carb was US cleaned I don't think it came from there. This leaves either something in the tank or something in the reused fuel filter.
Any thoughts?
Thanks,
Steve