Runs rough with warm temperatures... - Snowblower Forum : Snow Blower Forums
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post #1 of 13 Old 02-10-2020, 05:53 PM Thread Starter
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Runs rough with warm temperatures...

The machine doesn't have an adjustable carb and so it runs kind of rough when the temperature is above freezing. Sometimes it will stall and it can be annoying. Short of replacing the carb with an adjustable one is there anything that would help it run smoother until I swap carbs?

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post #2 of 13 Old 02-10-2020, 06:11 PM
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You can see if the replacement carb has an adjustable jet.. and see if it will fit your current carb.
I remember your other thread about having another carb... If you still have it you may be able to just use the adjustable jet from it

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post #3 of 13 Old 02-10-2020, 07:40 PM
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They arent interchangeable parts wise, pickup in the carb is different. Whole carb has to be changed when switching from fixed to adjustable jet


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post #4 of 13 Old 02-10-2020, 08:18 PM Thread Starter
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Quote:
Originally Posted by Shovel View Post
You can see if the replacement carb has an adjustable jet.. and see if it will fit your current carb.
I remember your other thread about having another carb... If you still have it you may be able to just use the adjustable jet from it

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Great idea! I did not know you could do that. Worth a try and if not switch the whole carb in the springtime. Cheers!

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post #5 of 13 Old 02-10-2020, 08:20 PM Thread Starter
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Originally Posted by e.fisher26 View Post
They arent interchangeable parts wise, pickup in the carb is different. Whole carb has to be changed when switching from fixed to adjustable jet


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That is unfortunate. I guess the whole carb is the way to go...

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post #6 of 13 Old 02-10-2020, 08:36 PM
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does it run better with the choke closed only slightly open? also any popping out the exhaust?

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post #7 of 13 Old 02-10-2020, 09:31 PM
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Is it possible the jet is too large? From what I understand, winter-use machines will have a larger jet than summer-use machines. I got 2 aftermarket (cheap) carbs for my 2-stroke blower, both ran lean and surged. But it's possible the carbs were meant for summer use?

In my case, I opened up the jet slightly, and that helped it run smoother. But if this happens in warmer weather, I wonder if you're running slightly too-rich.

If you can get a new jet, it's possible that would help, if your jet is a bit too-big.

If you have micro-drills, you might try something out-there, like putting a dab of epoxy over the hole in the jet, and re-drilling it slightly smaller. But that's a stretch.

Oh, and another vote for crazzywolfie's question. Understanding if the behavior gets better or worse with partial-choke would help.

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post #8 of 13 Old 02-10-2020, 10:16 PM
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Quote:
Originally Posted by e.fisher26 View Post
They arent interchangeable parts wise, pickup in the carb is different. Whole carb has to be changed when switching from fixed to adjustable jet


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If it's a honda or a honda clone there is a SBF member that makes an adjustable jet.
https://www.snowblowerforum.com/foru...38-post14.html
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post #9 of 13 Old 02-12-2020, 05:49 PM Thread Starter
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Quote:
Originally Posted by crazzywolfie View Post
does it run better with the choke closed only slightly open? also any popping out the exhaust?

No popping from the exhaust. I think (not positive) opening up the choke a wee bit helps but usually when I try that it's on the verge of stalling so not sure...

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post #10 of 13 Old 02-12-2020, 10:18 PM
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have you tried cleaning the main jet on the carb or pull the bowl to see if there is any issues in the float bowl?

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yardworks 31AH6WKF515
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