メインコンテンツにスキップ

Repair information and troubleshooting for Craftsman-brand riding lawnmowers.

549回答 すべてを表示

Backfiring when starting possible causes

What would cause this motor to backfire when starting?

回答がありました! 回答を表示 同じ問題があります

この質問は役に立ちましたか?

スコア 5
1件のコメント

erniedillon192, check your timing. The how to will depend on what model your mower is and what engine it has. It is possible that your timing is off due to a deformed flywheel key etc.

さんによる

コメントを追加

1 件の回答

ベストアンサー

backfire is a result of half burned, hot exhaust finding oxygen to finish burning. I'd change the spark plug first. I'm guessing its also hard to start or does it just do this when the engine has been running?

このアンサーは役に立ちましたか?

スコア 3

3 件のコメント:

Yes it is hard to start beside the plug what else would cause backfire?

さんによる

somehow your air/fuel mixture isn't right. Specifically would be hard to predict without messing with it. Its possible its not getting enough fresh air to support full burn in the cylinder, When did you change the air filter last?

Next I'd have a look at the carburetor, take off the bowl and see if its all gummed up with crud, if so clean it. If its still giving trouble, you might need to give the carb a good cleaning, which mostly sucks so because I'm lazy I'd try to run some barryman's b12 through it and see if that fixes it first.

さんによる

Thank's will try that definitely grateful I'll get back later this week if I still have this problem again Thanks

さんによる

コメントを追加

回答を追加する

erniedillon192 さん、ありがとうございました!
統計データ:

過去 24時間: 13

過去 7 日: 82

過去 30 日: 251

今までの合計 49,509