Posts
157
Joined
4/13/2015
Location
AU
Help!!! I bought a low hour 04 cr250, but it's quickly turning into a nightmare.
The bike runs, I took it for a quick spin around my backyard before the tear down, all seemed ok.
But with the engine out, I found it very hard to turn over (even with the plug out, so no compression). This is to the point I have to turn the crank with a long wrench on the flywheel nut. But, even then, the crank does not spin smoothly. It is extremely "notchy", for lack of a better description. It does turn with the wrench on the flywheel nut, but I get a lot of resistance, the crack turns maybe an eighth of a rotation, then a lot of resistance again. This is with the head off, so I can see the cylinder is in good condition and no seizure at all.
What is wrong? Main bearings or crank bearings are gone?
I suspect the bike has sat a lot of its life. Maybe some moisture rusted the main bearings?
Opinions please! Thanks in advance.
The bike runs, I took it for a quick spin around my backyard before the tear down, all seemed ok.
But with the engine out, I found it very hard to turn over (even with the plug out, so no compression). This is to the point I have to turn the crank with a long wrench on the flywheel nut. But, even then, the crank does not spin smoothly. It is extremely "notchy", for lack of a better description. It does turn with the wrench on the flywheel nut, but I get a lot of resistance, the crack turns maybe an eighth of a rotation, then a lot of resistance again. This is with the head off, so I can see the cylinder is in good condition and no seizure at all.
What is wrong? Main bearings or crank bearings are gone?
I suspect the bike has sat a lot of its life. Maybe some moisture rusted the main bearings?
Opinions please! Thanks in advance.
I would also check if the crank is true
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