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I have a 99 mxz 600. last year I had a piston burn down so I rebuilt the top end. it ran great for 4 miles then it started to backfire and shut down. it didn`t burn the piston again so I just put it away for the year. this year I rebuilt the motor from the crank up. thought I might have bad seals. ran great for 3 miles then it started to backfire and shut down again. I put a new coil on it also has a new stator. carbs have been cleaned. The only thing I can think it could be is a bad cyclinder or a bad electric module. has anybody have any ideas out there. hate to keep spending money on parts I don`t need!!!!!!!

 

[600RacerX]

how old is the gas?

Keep it simple first.

 

[bicknell1545]

do you have a manual that tells about the gauges? i have a 03 800 mxz and was wondering if you could help with what the indicator lights mean. any help would be awsome

 

[RSR Mechanic]

Get a compression tester; they are only like 20 bones for a basic one and it will let you know right away if its your engine causing the problems or something else. A compression tester takes a lot of guesswork out of the process. Each cylinder should be 120 psi at least to function properly.

 

[smallengineguy]

bicknell, start a new thread.