Author Topic: MS180-c sluggish not running well  (Read 352 times)

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Offline weimedog

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Re: MS180-c sluggish not running well
« Reply #10 on: September 14, 2014, 09:00:16 am »
Took it right out to eliminate the variable. Changed Fuel Line, took off air filter element, new spark plug. Carb kit first, Chinese carb second. Checked compression and all that typical stuff. Checked pulse hole, sprayed silicon around looking for an air leak.... maybe it's just a pig! Thinking maybe heavy carbon build up in exhaust or something out of the box like that now. This is the second one of these that can with a odd hard to find issue.

I want to vacuum test the bottom end, just don't have an easy yet.

Offline bloodontheice

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Re: MS180-c sluggish not running well
« Reply #11 on: September 14, 2014, 12:00:29 pm »
I'm not sure why but the 180's that get used and slightly abused run better than the ones
that get used infrequently. Of all Stihl models ranges the 1130 (MS170/180) are the most
inconsistent runners, not in quality but in how they run.
It seems like I could take 10 saws brand new out of the box and all 10 would run differently.


Offline weimedog

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Re: MS180-c sluggish not running well
« Reply #12 on: September 14, 2014, 03:54:40 pm »
So what should that saw wind up too? Any idea's where to take that saw? Think I will post a video so you can hear & see where it is now.

Offline jmester

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Re: MS180-c sluggish not running well
« Reply #13 on: September 14, 2014, 10:20:15 pm »
Stihl says they should be spin around 14,000. what for fixed jet did they have in the old carb. parts listing has 2 listed one for sea level and one high altitude. maybe a smaller jet is needed to get the other rpms out of the saw. just a wild ass guess on that.
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Offline 660magnum

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Re: MS180-c sluggish not running well
« Reply #14 on: September 14, 2014, 10:29:42 pm »
Those Chinese flocked filters really choke off the air. But in a previous post he said he had removed the filter.
We should share what we know... someone may learn...
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Offline weimedog

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Re: MS180-c sluggish not running well
« Reply #15 on: September 15, 2014, 09:25:09 pm »
I blended a carb for a 250 and was able to get more rpm's.. leaning out the top some. So its better but not what I want to leave this shop. The filter in or out made no difference. My instinct leads me to ignition timing, but since saws are typically SO simple in that area I can't imagine what might go wrong there. Huztl ignition on its way.....

 

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