swmichsx
New member
I checked my plugs a week ago and everything was as it should be. yesterday my sled idled a little funny so i checked the plugs again and 1 of them is a pewter color. any idea what this is indicating? i did not have time to mess with it yet. it runs fine down the trail. it did back fire right off idle 1 or 2 times. i changed that plug but did not have time to ride it.
The last time my plug was pewter/grey was when I lost that cylinder. Check it again and make sure everyhting checks out.
horkn
New member
stein700sx said:
Yeah, that does not sound good at all.
Take a look at the top of the piston on that side.
If compression test is good I would still suspect a coolant leak, burning coolant can turn a plug electrode different shades of grey.
swmichsx
New member
i am going to test compression tomorrow. i just re built the top end 200 miles ago. i hope i didn't loose that hole. looking in the plug hole with a flash light it looks ok.
swmichsx
New member
what caused the loss of your cylinder?stein700sx said:
swmichsx
New member
i rode for an hour or longer and the sled ran great. never missed a beat. but crap happens.
My cylinder ingested the mag side bearingswmichsx said:
Lost of aluminum parts flying around inside the cylinder made it gray
swmichsx
New member
was it a crank bearing or the bearing in the piston pin?stein700sx said:My cylinder ingested the mag side bearing
Lost of aluminum parts flying around inside the cylinder made it gray
97's had a mag side crank bearing problem. Not enough lubrication to them( two bearings)