Derrick Sawyer
ArboristSite Guru
Hey all,
Got an older Stihl 066 driving me crazy, couldn't start the saw so checked everything out- Vacuum and Pressure tested fine, piston looks fine, compression is good, fuel line and filter are new. Figured it just needed a carb rebuild, got a carb kit, cleaned out the old carb as I have done on dozens of other occasions (sonic bath) dried passages with air compressor, put back together, DOES NOT START.
Checked the inlet needle adjustment again, was fine, but dry. There is gas on fuel pump side but none getting to the needle side?? I raised the metering lever to give more fuel, still no start. I put in a carb off a newer 660, started and ran fine. Then I figured carb might be bad, recently got a bunch of stihl 660 parts from someone else, so I tried my rebuild kit on 2 other carbs after cleaning those as well, still no start due to no gas, driving me crazy spending all day rebuilding and cleaning carbs.
I guess its possible all these carbs are not fixable, what would cause some to not be rebuildable?
I sprayed carb cleaned thru and they seemed ok. Even brought the L screw way out to give more gas, still no gas on needle side. Note: the carb on my newer 660 that worked I had also rebuilt a while ago and its fine. Out of dozen of other carbs I have rebuilt, had one that could not stop from flooding, rest were fine.
Got an older Stihl 066 driving me crazy, couldn't start the saw so checked everything out- Vacuum and Pressure tested fine, piston looks fine, compression is good, fuel line and filter are new. Figured it just needed a carb rebuild, got a carb kit, cleaned out the old carb as I have done on dozens of other occasions (sonic bath) dried passages with air compressor, put back together, DOES NOT START.
Checked the inlet needle adjustment again, was fine, but dry. There is gas on fuel pump side but none getting to the needle side?? I raised the metering lever to give more fuel, still no start. I put in a carb off a newer 660, started and ran fine. Then I figured carb might be bad, recently got a bunch of stihl 660 parts from someone else, so I tried my rebuild kit on 2 other carbs after cleaning those as well, still no start due to no gas, driving me crazy spending all day rebuilding and cleaning carbs.
I guess its possible all these carbs are not fixable, what would cause some to not be rebuildable?
I sprayed carb cleaned thru and they seemed ok. Even brought the L screw way out to give more gas, still no gas on needle side. Note: the carb on my newer 660 that worked I had also rebuilt a while ago and its fine. Out of dozen of other carbs I have rebuilt, had one that could not stop from flooding, rest were fine.