441 stalls/floods when hot

[stihlaficionado]

Super low hour saw. Starts flawlessly, idles well, revs out until hot, then stalls/floods.
New fuel.
Will restart, but will not rev, instead stalls
Any ideas?

Not M Tronic

 

[merc_man]

Coil

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[swatbwana]

Did you check piston on exhaust side?

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[pioneerguy600]

Two weekends back my saw would start and idle but refused to spool up, would miss, blow fuel out the muffler and even backfire, thought the coil was on its way out. I pulled the sparkplug and it was black, had a brand new one and tried that, what ya know the saw has run flawlessly since. Time may tell if the module is getting weak but right now one would not suspect so.

 

[stihlaficionado]

Thanks for the replies. I'll start with the plug & work my way in.

 

[stihlaficionado]

It was the plug after all

Thanks again for all the suggestions.

 

[Termite]

I had the same problem with a 65l Husky. I believe you fix yours sooner than I did.