Hello guys. A friend of mine just got a used 044. The main problem was the piston that had the rings seized because of the intake boot which had a crack on it. I replaced the piston, intake boot and fired right up. But it doesnt run quite right, i think it has an air leak somewhere. When i turn it on the flywheel side it stops imediately. Could be the seal problem?
Stihl 044 small issues
- Thread starter sre09
- Start date
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Do a pressure/vacuum test.
It's always a good idea to replace seals as they come in a gasket set.
It's always a good idea to replace seals as they come in a gasket set.
Yes, it sounds like a seal problem. Like was mentioned, best to start with a pressure/vacuum test, not hard to do on that saw..
More than likely crank seals, they're pretty easy on that saw. Hardest part is getting the flywheel off.
Hmm, i replaced the flywheel side seal and now after it starts to warm up, at wot it doesnt 4 stroke anymore. It 4 stroke very good before warms up. I dont have a pressure/vacumm tester 
. Could be the carb the fault?
. Could be the carb the fault?Try the brake cleaner method to see if you have a vacuum-leak. It's not super exact for small leaks, but I've found it good enough. Just start the saw and let it idle, spray break cleaner on one seal at a time. If it dies you've found your leak.
Why not make your own pressure tester? Not much to it, I think there's several posts on AS on how to do it cheaply..
Yes, the carb could be adjusted too lean on the H side.Hmm, i replaced the flywheel side seal and now after it starts to warm up, at wot it doesnt 4 stroke anymore. It 4 stroke very good before warms up. I dont have a pressure/vacumm tester
Best thing to do is vac and pressure test.Hmm, i replaced the flywheel side seal and now after it starts to warm up, at wot it doesnt 4 stroke anymore. It 4 stroke very good before warms up. I dont have a pressure/vacumm tester
drf255
BAD CAD
Check the crank spacer on the PTO side too. I’ve had one crack and cause an intermittent leak when it warmed up and expanded.
drf255
BAD CAD
No
I've checked the crank spacer and it is in good shape, it even has in the bottom the o ring. Tommorow i will replace the fuel line, fuel filter and impulse line and will see if the problem solves. I will come back with news.
