Engine Stalls & Dies


Old 06-20-03, 08:16 PM
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Unhappy older b&s 5 hp runs about 10-20 secs then dies also backfires

older style b&s 5hp it runs about 10-20 secs. then dies. also backfires through muffler. most of the time i have to choke, sometimes not. will not run on low idol, one speed when not choked, high speed. (when it runs)
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Old 06-21-03, 06:51 AM
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Hello hashpappy. Welcome to our Do-It-Yourself Web Site and our Small Engine forum.

The problem description seems to meet all the classic symptoms of a fuel flow restriction from the tank, a carb which runs out of fuel, possiblly from a stuck float needle and or a carb that is gummed up.

First test would be to remove the fuel line from the carb and check for fuel flow. The flow rate and volume must remain constant. If there is any slow down in the rate during this time, remove the fuel tanks cap and note any difference.

If the flow rate continues to remain slow or stops, there is a restriction in the tank, fuel line or the vent hole in the fuel cap is plugged and or restricted. Removal of the cap will allow full flow to return to full flow.

Check the fuel filter. This filter may be inside the tank or inline, if there is one.

Check back on your topic several times over the next several days for additional replies from the forums other small engine professionals.

Read the already asked questions on this type of engine running problem and replies offered within this forum. Doing so will provide you additional help & information on diagnosing the problem and some of the solutions.

If you need further assistance, use the REPLY button. Using the reply button moves the topic back up to the top of the daily topic list automatically.

Regards & Good Luck.
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Old 06-23-03, 12:27 AM
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I agree...sounds like you are running lean, and need a carb cleaning.
Old 07-01-03, 01:34 PM
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Thanks guys, you were right. the fuel mixture needle was screwed in most of the way. backed it off one and a half turns, runs like a top. thanks again.
Old 07-01-03, 11:46 PM
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Good Job!

Glad we could help!

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