Mower runs but has small backfires when accelerator moves up.
Craftsman 917.289220 Mower runs but has small backfires as throttle is moved up. Also loses power as this happens.
Ist dies eine gute Frage?
Craftsman 917.289220 Mower runs but has small backfires as throttle is moved up. Also loses power as this happens.
Ist dies eine gute Frage?
A spark plug that is damaged, worn, or has an improperly set gap between its electrodes creates a weak spark. As a result, the fuel may not ignite in the cylinder, but it might ignite when it reaches the hot exhaust muffler. The result is a loud backfire. Poor spark also results in a mower that runs unreliably.
War diese Antwort hilfreich?
Changed plug. Same result. The plug I took out was black with carbon, I guess.
Your plug sounds like it is getting to much gas. Here's how to read a plug:
It is dry fouling according to the pic. How do I remedy this?
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3 Kommentare
Forgot to mention, air filter is clean, oil ok, fuel flows freely through filter.
von Brian clark
@bvilleeer sounds more like a carb issue than an ignition issue. What make and model is your mowers engine?
von oldturkey03
Not sure oldturkey03. Briggs 21hp
von Brian clark