Ariens ST724E starved for fuel - Snowblower Forum : Snow Blower Forums
 
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post #1 of 6 Old 10-12-2018, 02:18 PM Thread Starter
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Ariens ST724E starved for fuel

I've had this Ariens ST724E (Tecumseh OHSK70) snowblower for quite a few years now and it has a recurring problem. It will run great for awhile - working fine through several storms - and then it will stop running. The problem appears to be fuel starvation and I can't figure it out.

I've replaced the fuel line, added a clear plastic fuel filter, and even replaced the carb. I can see the fuel in the filter when I start the engine, and at some point it the filter starts running dry. Eventually the engine stops running. If I disconnect the fuel line, remove the float bowl, etc I don't see any debris, and when I put it back together it works for awhile but then the situation repeats. Yes, there is fuel in the tank.

The only thing left to replace is the fuel tank, but I'm not seeing any particulates in the fuel filter so I don't know why that would help.

I'm stumped. What am I missing? Is this a common issue with these engines?

Thanks
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post #2 of 6 Old 10-12-2018, 03:06 PM
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Is the gas cap venting properly ? Or, is there crud in the bottom of the fuel tank that may be clogging a screen in the bottom of the tank ? Don't buy a new tank yet ! Try some easy/cheaper fixes first !


Both of my suggestions can be tested by filling the tank with gas, and then disconnect the fuel line from the carb, and have it dump into a gas can, and watch the flow to see if the flow is constant and if the whole tank empties. Do this with the cap on tight.This will tell you if the problem is at the carb, or at the tank.
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post #3 of 6 Old 10-12-2018, 03:17 PM Thread Starter
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That's a great idea! I'll try that. Thanks!
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post #4 of 6 Old 10-12-2018, 03:20 PM
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I have done a lot of cussing becausing because of fuel filters. If you must have a filter on a snowblower.Than relocate it somewhere away from any heat source.Fuel Vaper lock is a big problem on any snowblower.Trying to tune up a snowblower in the middle of a heat wave. It is tough without the filter.So try it without a filter and see if it runs better.Vapor lock will make a grown man cry.23 years I have had my Yardman Never had a filter on it.Just keep your fuel in a clean container .And i also use a Fuel filter funnel.
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post #5 of 6 Old 10-12-2018, 03:23 PM Thread Starter
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I hear you. Thing is I put the filter on after I started having the problem. The filter may cause its own problems, but it definitely wasn't the cause of this one. (Not the initial cause, anyway.)
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post #6 of 6 Old 10-12-2018, 05:09 PM
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Quote:
Originally Posted by Mike in CO View Post
That's a great idea! I'll try that. Thanks!

Mike - Will you marry me ? Those are 8 words that are not in my wife's vocabulary - at least not in that order ! LOL
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