Stalls when wet - Snowblower Forum : Snow Blower Forums
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post #1 of 39 Old 01-24-2014, 11:15 AM Thread Starter
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Stalls when wet

Hi, I've had this problem year after year and would love to solve it. My 8.5 B&S will start fine but once I start working and snow starts blowing back onto the engine, it will stall. I've made a few makeshift moisture shields, choke washer, replaced the gas cap without any success. I know this model has this problem from reading some other posts around the web. If there is no wind, and just a few inched to blow, it runs like a champ. Any help on this would be appreciated.
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post #2 of 39 Old 01-24-2014, 11:19 AM
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Welcome to SBF! That must be so frustrating. Does it start right back up again after it quits? Does it sputter for a while before it quits, or does it just stop?


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post #3 of 39 Old 01-24-2014, 11:37 AM Thread Starter
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Sputters a bit - I can keep it going if I turn on choke. And it will start back up!

Thanks
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post #4 of 39 Old 01-24-2014, 03:04 PM
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are you able to reproduce the problem by misting water (ex: with a spray bottle) towards the carb?

-Ken

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post #5 of 39 Old 01-24-2014, 03:06 PM
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If you can start back up with choke, you could be experiencing "carburetor icing." Moisture condenses and freezes in your carburetor throat. The "cold" condition requires a richer mixture to run effectively, thus the need for choke. You've got to keep the snow away from your carburetor with a baffle of some sort. Run her on a warm day with no snow and see if it still happens. That will eliminate weather as the cause. Good luck. MH
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post #6 of 39 Old 01-24-2014, 04:07 PM
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I've had this issue with two of my three blowers. I solved all of them by putting a cotton cloth in front of the intake for the cooling air opening around the recoil start. Hang it by four 3" copper wire, black as the engine. I put a hole in the cloth for the pull rope. I have not had this issue with my last B S engine. I'm forced to blow all my snow to the East, so when the wind is wrong I ice up my carb. Once I retired I just waited till the wind died.
You just give the cloth a good pull and the snow falls off so you resume ample air to cool your engine. Not hurt the engine yet.
This is a common problem in this area of high winds.
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post #7 of 39 Old 01-24-2014, 04:07 PM Thread Starter
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I will try the water misting test. Even on a cold day if I start it up and let it run it idles fine. Also the muffler is very close to the carb

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post #8 of 39 Old 01-24-2014, 04:57 PM
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I have the briggs 8.5 as well and I have had problems as well. Here is a link to a thread that I am guessing you have already seen. Follow the link in post #15.
https://www.snowblowerforum.com/forum...ower-swap.html
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post #9 of 39 Old 01-24-2014, 06:26 PM
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Quote:
Originally Posted by scipper77 View Post
I have the briggs 8.5 as well and I have had problems as well. Here is a link to a thread that I am guessing you have already seen. Follow the link in post #15.
https://www.snowblowerforum.com/forum...ower-swap.html
Following that thread into another showed one case where the problem was due to a faulty ground on the safety key. Moisture from the snow caused the safety key to ground out.

-Ken

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post #10 of 39 Old 01-24-2014, 06:45 PM
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Quote:
Originally Posted by WestminsterFJR View Post
Following that thread into another showed one case where the problem was due to a faulty ground on the safety key. Moisture from the snow caused the safety key to ground out.
If that thread showed me anything it is that the Briggs 8.5 is very problematic. I only wish I had a clear idea what the problems really are. Tell me what is wrong and I can fix it.
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