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Discussion Starter · #1 ·
I have a 94 1340 motor and the rear cylinder will not fire. Before it stopped firing it was back firing through the pipe. The timing is good and the plug has good fire, the front cylinder runs so I assume the carb is o.k. I tried to do a leak test but the cylinder is cold so the air passes the rings. My only thought is a burnt or sticking intake valve does anyone else have a thought? Thanks
 

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Just Ride
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3,614 Posts
Pull the plug, look in hole (kinda hard) might see what the problem is. Put thumb over hole, crank motor, any compression? Or could be just a bad spark plug wire.
 

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12roadking
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118 Posts
sounds to me like a cam problem with the backfiring as long as the plug is good
 
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