Briggs 18.5 intek backfiring, wont start

97cummins

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May 7, 2012
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I have a Briggs 18.5 intek that was given to me with a broken connecting rod, i replaced the connecting rod timed it and sealed the case back up. i put the motor back in the mower and it will not start and it backfires out of both the carb and muffler. it is in time at both the shear key and the cam so i know thats not the problem its got a new spark plug in it as well. it ran fine until the rod broke and now that ive got it back together it backfires and wont run and all ive done is take the back of the motor off and put a new rod in it and i have not messed with anythng else. any ideas what it could be? Thanks in advance
 

reddragon

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Jun 4, 2011
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sure sounds like something is out of time....but ..if that is ok....then a lean condition in the carb can do those things as well
 
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