Please help with Stihl MS250

[jughead500]

My bg86 leaf blower done the same.it was the spark arrester.it was all of a sudden too like you mentioned.
Its pumping gas in but not moving enough air through to complete combustion thus fouling the plug.
(I may be wrong in your case though)

 

[jughead500]

Are you using ethanol gas? What part of wnc are you in? May be able to help you if your close to me.

 

[a. palmer jr.]

Seems that I've had to change a few ms250 carburetors. I replaced the one screw ones with two screw carbs.

 

[Winchester356]

My bg86 leaf blower done the same.it was the spark arrester.it was all of a sudden too like you mentioned.
Its pumping gas in but not moving enough air through to complete combustion thus fouling the plug.
(I may be wrong in your case though)

Yes it is fouling the plug fast. It will be black in only a couple minutes.

 

[Winchester356]

Are you using ethanol gas? What part of wnc are you in? May be able to help you if your close to me.

I'm pretty close to the TN line. The fuel I am using is suppose to be ethanol free.

 

[jughead500]

What county in tn are you close to.i have a spare ms250 zama and a rebuild kit for the walbro should be in the mailbox later.can tear down and rebuild the whole saw on my tail gate if needed.

 

[cedarshark]

Why has the OP not done a simple check of his spark arrestor screen or did I miss the answer ?

 

[jughead500]

Why has the OP not done a simple check of his spark arrestor screen or did I miss the answer ?

Nope no answer yet.

 

[Winchester356]

My bg86 leaf blower done the same.it was the spark arrester.it was all of a sudden too like you mentioned.
Its pumping gas in but not moving enough air through to complete combustion thus fouling the plug.
(I may be wrong in your case though)

It was the spark arrestor I cleaned it and it is running good! Thanks everyone for the help!

 

[jughead500]

 

[jughead500]

Happy Dance