Tecumseh 8hp flathead non-adjustable cab surging - Snowblower Forum : Snow Blower Forums
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post #1 of 20 Old 09-25-2019, 05:00 PM Thread Starter
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Tecumseh 8hp flathead non-adjustable cab surging

I got my Ariens ST824E used. It came with Tecumseh SnowKing 8hp flathead engine. It starts up easy and run fine for like 5 mins in any throttle position, and then it likes to surges after that. It is like once the engine is warmed up, something kicked in to take over the gas/air mixture control, which caused the engine to surge. If I give it half choke, it would smooth out.

It happened like that every time.

This snowblower is 10 years old by the way and the cab is non-adjustable.

I already cleaned the fuel tank, cab bowl, main jet and idle jet (I cleaned them well). I put in new fuel. The bowl's seal is good. Nothing loose and all the linkages seemed fine. Nothing helped.

The surging isn't that bad, but it would affect snow blowing for sure.

I could put in new spark plug and ignition coil, but I don't think they are the issue.

Chinese cab would be my next move, but I want to hear from others first.

Thank you.
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post #2 of 20 Old 09-25-2019, 05:05 PM Thread Starter
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Also, would it be a good idea to run with half choke all the time? Maybe drill the jet holes help? I'm afraid it would run rich and carbon build up.
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post #3 of 20 Old 09-25-2019, 05:58 PM
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Tecumseh 8hp flathead non-adjustable cab surging

I buy these all the time, has a adjustable jet. I have 3 more to replace and this is way Iím going


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post #4 of 20 Old 09-25-2019, 05:59 PM
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i'd try it with the gas cap loose just for shi#@ and giggles.

24 " 1967? Ariens Sno thro
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post #5 of 20 Old 09-25-2019, 06:00 PM
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True


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post #6 of 20 Old 09-25-2019, 07:04 PM Thread Starter
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Quote:
Originally Posted by nwcove View Post
i'd try it with the gas cap loose just for shi#@ and giggles.
I tried that and cleaned the gas cap as well. It didn't help. There was a dirt ball under the rubber cushion of the gas cap, or whatever you called it,

It is no wonder why the gas tank would get dirty/greasy overtime.

Last edited by dman2; 09-25-2019 at 07:16 PM.
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post #7 of 20 Old 09-25-2019, 07:10 PM Thread Starter
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Originally Posted by e.fisher26 View Post
I buy these all the time, has a adjustable jet. I have 3 more to replace and this is way Iím going


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It is the way to go, considering the price of it. It might not be the same quality, but it is new and clean.

Clean a dirty cab take a lot of times, and it is not guaranteed. I don't even have all the tools and the knowledge to clean it properly.
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post #8 of 20 Old 09-25-2019, 07:17 PM
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LOL, I just received that same carb today for my 8HP Tecumseh Ariens rebuild.

The old carb looked fine, but for 13.00, its a no brainer, and I'll clean and shelve the old one in my spare time.
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post #9 of 20 Old 09-25-2019, 07:19 PM Thread Starter
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LOL, I just received that same carb today for my 8HP Tecumseh Ariens rebuild.

The old carb looked fine, but for 13.00, its a no brainer, and I'll clean and shelve the old one in my spare time.
The rubber hoses will need to be replaced anyway. They tend to crack overtime.
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post #10 of 20 Old 09-25-2019, 07:34 PM
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If you donít have replacement Welch plugs or a ultra sonic cleaner itís hard to correctly clean a carb


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