Stihl 029 S idling problem

[Joel D'Angelo]

Hi, so I opened up the muffler on my Stihl saw. Nothing crazy just a little bit. I re-tuned the saw as best I could afterwards. Since I did that the saw continues to sputter and die annoyingly often at idle. I turned the idle up a bit but it still does it. Anybody else have that problem?

 

[dmb2613]

How was it running before you screwed with it? If it was running good then, take the carb back to factory setting and turn the high side 1/4 turn out you should be good there

 

[Joel D'Angelo]

Before I opened up the muffler it idled fine. I haven't screwed with the carb to much as it runs great otherwise. Thanks

 

[dmb2613]

Turn both high and lo screws 1 turn off of seat

 

[a. palmer jr.]

I usually turn all my 029-290 saws into a 039-390 saw. Then I usually modify the muffler and turn the screws out a bit or change the carb to an 044-46 version. Mostly bolt on stuff and really makes the saw run better. Here's a pic of one I made from spare parts around the garage..I even used the 290 starter cover...I guess the caps give it away that it's not an MS..

 

[Joel D'Angelo]

I'm sure stepping up the cc's gives it more power but I have to say I was impressed with the 029 last time I had it out. Bar buried completely in oak didn't bog a bit. Noticeably more powerful than my brother's new MS271.

 

[a. palmer jr.]

I'm sure stepping up the cc's gives it more power but I have to say I was impressed with the 029 last time I had it out. Bar buried completely in oak didn't bog a bit. Noticeably more powerful than my brother's new MS271.

If you're happy with it then so am I. I usually only turn the 290s into 390s when the saw needs a rebuild unless someone asks me to....If these saws have a good carburetor and fuel lines and has erratic idle it might be an air leak somewhere.

 

[farmguywithasaw]

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If you're happy with it then so am I. I usually only turn the 290s into 390s when the saw needs a rebuild unless someone asks me to....If these saws have a good carburetor and fuel lines and has erratic idle it might be an air leak somewhere.

Intake boot is a common place on those I think

 

[a. palmer jr.]

If I was guessing I would guess a leak in the crankcase where the crankcase cap goes on, just sealer, no gasket on these. A pressure/vacuum test would let you know if it leaks and where...

 

[Joel D'Angelo]

I don't think it is a leak as it idled fine before I opened it up. It doesn't die that bad. Just often enough to be annoying.

 

[Joel D'Angelo]

I notice performance vehicles don't idle well. I thought maybe opening up the muffler in and of itself could cause a poor idle.

 

[a. palmer jr.]

Opening the muffler up will tend to make the saw run a bit leaner, especially if you overdo it...