Briggs and Stratton 725Ex 190cc

[thejoe]

My lawnmower backfired and quit running. It is only 3 years old. I replaced the magneto coil and the carburetor. I have great spark, (I used a tester). Even if I spray starting fluid in the carb, or behind the plug, nothing!

 

[ILENGINE]

dropped valve push rod maybe model, type and code from engine would help us narrow down the possible causes for your problem.

 

[thejoe]

My lawnmower backfired and quit running. It is only 3 years old. I replaced the magneto coil and the carburetor. I have great spark, (I used a tester). Even if I spray starting fluid in the carb, or behind the plug, nothing!

Thanks for the reply! The model number is 12-M02-0943-F1-13081962 Manufactured in Aug. 2013.

 

[ILENGINE]

With good spark, and fuel, that just leaves either compression problems, or timing issues like a sheared flywheel key. Also may want to check the intake pipe. There has been cases where they have cracked.