Xt 600 e 4PT -- weird noise
Here's the story so far, after a coil failure and replacement ,I heard a metalic clang/ping ,seemed to be coming from the right side of the cylinder barrel ( could be resonance from the fins ). The noise appears at around 2000rpm if the revs are brought up slowly ,or the choke has the engine running at that speed .
The pings seem to correspond with a slight hesitation in running which can just be detected in the exhaust note . No noise if the throttle is opened quickly ,at higher revs or on the overrun.
I had thought that maybe the coil failure had damaged the TCI unit and upset the advance around the 2/3000rpm range and was causing pre ignition ,so I swapped it with a known working unit ,no change .
Before the coil failure I heard no noise but this could be coincidence.
The bike rides fine ,it's jetted to suit the open airbox and after market silencer and will manage about 95 mph on a 16 tooth gearbox sprocket .
The bike starts fine if the air temp is 5deg C and above ,a bit difficult at lower temps but only after the coil failure ,before that it started fine at -10 deg C. 50,000kms on the odo ,uses a wee bit of oil .
Any suggestions before I dismantle it to check the piston and bore ?
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