Toro 2 Cycle blower carb issue - Snowblower Forum : Snow Blower Forums
 
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post #1 of 6 Old 02-13-2018, 08:13 AM Thread Starter
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Toro 2 Cycle blower carb issue

So I have been taking care of this machine for an old timer in town for a while, he bought it brand new back in the day and doesnt want to get rid of it as its light enough for him to throw in the back of his truck when needed.

Over the past few years I have been cleaning the carb for him and the machine runs fine for a season, this year I told him I'll get him a new carb as they are only $10 or so from ebay. I threw the carb on and the machine has issue idling and kicking into high gear under load, there are no adjustment screws on the carb so I cant adjust the fuel/air ratio, I know the machine is running too rich as I can see a spray of unburnt fuel spit out of the muffler when I am trying to start the machine plus it smokes like a fiend when it does fire up.

here is a short video of it in action, you can see that it runs for a while and then dies, any ideas on what the issue could be and how to rectify it? TIA

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post #2 of 6 Old 02-13-2018, 09:28 AM
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Posting the exact model/engine type would help. Is the carb leaking at all? I would first check that the float level is correct. Can you switch the jet from the old to the new and see if that helps?
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post #3 of 6 Old 02-13-2018, 11:26 AM
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I canít watch the vid on my iPad, no flash.

Maybe swap the bowl nut (main jet) from the old carb. It could be sized wrong.

Is it a Tecumseh 2 stroke? If so, 98cc or 139cc?

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post #4 of 6 Old 02-13-2018, 11:33 AM
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This is why I clean carbs using a carb dip soak tank and an ultrasonic cleaner. The factory carbs are the best.

Using a synthetic oil? They run cleaner and you can run them leaner.

Make sure the fuel line is new, the tank is clean, and you have a gas filter.

Is he storing this in a shed or garage rather than outside under a tarp?

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post #5 of 6 Old 02-13-2018, 12:27 PM
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Way too rich. If you're 100% sure this is the right carb for this engine then I'd suggest draining the gas tank and the carb and starting over with a fresh batch of premix and a new sparkplug. I prefer the new synthetic 2 stroke oils as they burn much cleaner and leave fewer carbon deposits. Usually a 50:1 ratio can be used. When running 2 strokes do spit out the carb but it's a mist not a stream or even droplets.
The sparkplug should approximately look like a cup of coffee with cream.
If this doesn't solve the problem you'll have to start with the float level and jetting. If the engine has a reed valve it could be worn or broke. I doubt it has one. It is probably just a simply piston port engine. If you can figure out what engine it is, a Tecumseh, a Briggs or a Suzuki we can help more.
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post #6 of 6 Old 02-13-2018, 06:08 PM Thread Starter
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Its a toro 38170, I believe 3hp tecumseh motor. I did change the gas to a fresh batch of 50:1 and it didnt help, machine starts and runs for 10~15 seconds as shown in the above video, then it stalls and wont start for a good hour or so regardless of how many times I try to crank it.

I'll clean the old carb and put it back on there to get the machine going for the time being.
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