Picked up a MS250 that would start and idle but would die with acceleration. Cleaned carb and installed carb kit, put new air filter on. Now it starts and sounds good out of the wood but when you put it in the wood it bogs out and dies if you stay on the throttle. It seems to be flooding itself out. I pressure checked the carb and rechecked my gaskets and diaghrams. Checked and cleaned tank vent. Fuel line looks good. Changed spark plug. There is quite a bit of fuel in the air filter box when after you start and run it. Any suggestions? As always, Thanks guys!
Stumped MS250
- Thread starter jcappe
- Start date
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I had one that the boot wasnt installed perfectly in the right derection, that gave me fits...:msp_thumbup:
Fish
Tree Freak
Go through the carb correctly....
jus2fat
Two Harley Fatboys
As my mentor..(and I as his student)...have said many times...
90% of chainsaw problems are carb related...likely the problem is there..somewhere..??
Run the carb through an ultra-sonic cleaner if someone in your area has one....!!
J2F
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Sounds like worn rings or low compression on this end.I will go out on a limb and say the compression is less than 115 lbs hot, Ken
Haven't check the compression yet, guess I had it pounded in my head it was something with the carb since it ran better after the carb kit. will check comp and let you know. Thanks for the replies so far.
Got it!
After rechecking my work and putting carb in the ultrasonic cleaner, along with checking the above mentioned......I removed the muffler and checked the spark arrest screen. Plugged up tighter than Fort Knox. Removed it, started it and put it in some wood and it runs great. Thanks again for the tips guys. Appreciate it a ton!
After rechecking my work and putting carb in the ultrasonic cleaner, along with checking the above mentioned......I removed the muffler and checked the spark arrest screen. Plugged up tighter than Fort Knox. Removed it, started it and put it in some wood and it runs great. Thanks again for the tips guys. Appreciate it a ton!
jus2fat
Two Harley Fatboys
Congrats..!! - Good to hear you got it running good again..!!After rechecking my work and putting carb in the ultrasonic cleaner, along with checking the above mentioned......I removed the muffler and checked the spark arrest screen. Plugged up tighter than Fort Knox. Removed it, started it and put it in some wood and it runs great. Thanks again for the tips guys. Appreciate it a ton!
A plugged screen should always be checked first..and an ultra-sonic carb cleaning really does it's job..!!
"Appreciate it a ton!" - That why we get paid the Big Bucks..LOL..!!!!!
J2F
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Oh well I am not right 100% of the time.Glad you got it going. I must be sliping Ken
Hadn't even gotten to that point yet. I did not bother cleaning it to put back on either.
Thanks for the help!
MEATSAW
ArboristSite Guru
When I first saw this thread I thought Stumpy had done an MS250...
Oh well.
Oh well.
