I've about run out of ideas as to how to get this Husky 55 running decently. It will start and run for a few seconds, then die spontaneously or as soon as any throttle is applied. When first started, it will run a few seconds longer than subsequent restarts.
See it in action:
First, some background - saw has been worked on before by someone else.
Compression is only around 125 but that should be enough to run.
No scoring on piston, top end looks pretty new and I suspect it's after market.
I've done pressure/vacuum tests - no issues.
Second, what I've done (besides above):
New fuel filter although old one seemed good. Fuel line is flexible with no leaks (pressure tested).
Tried new carb (AM) with no change in behavior.
Put in new spark plug. Has strong blue spark - jumped 1/4" gap.
Replaced decomp with plug to rule out any leaks there.
Have tried all sorts of different carb settings starting from 1.25 turns out on both needles.
Set the gap on coil - it was much tighter than a business card.
There is minor scoring on the FW that suggests it rubbed on coil at some point.
FW key is intact and properly seated.
Any suggestions will be appreciated.
See it in action:
First, some background - saw has been worked on before by someone else.
Compression is only around 125 but that should be enough to run.
No scoring on piston, top end looks pretty new and I suspect it's after market.
I've done pressure/vacuum tests - no issues.
Second, what I've done (besides above):
New fuel filter although old one seemed good. Fuel line is flexible with no leaks (pressure tested).
Tried new carb (AM) with no change in behavior.
Put in new spark plug. Has strong blue spark - jumped 1/4" gap.
Replaced decomp with plug to rule out any leaks there.
Have tried all sorts of different carb settings starting from 1.25 turns out on both needles.
Set the gap on coil - it was much tighter than a business card.
There is minor scoring on the FW that suggests it rubbed on coil at some point.
FW key is intact and properly seated.
Any suggestions will be appreciated.