We bought a 2001 rmk 700 which is not much to look at, but seems to run fine. The sled is stock through and through but had some electrical issues (voltage regulator) and the speedo doesn't work (3300 showing). Other than idling a little high (2K), and drinking oil (1 quart @ half tank) it runs fine.
We were out the other night in a field running passes at 3/4 throttle and it all of a sudden just dies. We got it started and limped it home and found that the mag cylinder was not firing. Upon closer inspection the right plug gap was closed and the the prong/electrode were touching. After much googling, I'm down to 3 scenarios that could cause this:
1. piston hit the plug - likely cause is bearing failure in the crank
2. debris entered the cylinder, came between piston and plug - likely cause is piston ring/skirt implode, or bearing bits from crank?
3. detonation.
The engine is not seized, and compression test is 110 / side. After regapping the plug the engine starts and will run with one plug from left/right.
My questions;
1. Does anyone have any experience with this exact scenario?
2. Is there any scenario whereby this is just a fluke and I continue riding as-is?
3. What is the recommended course of action? A top-end rebuild is obvious, but is a complete tear-down in order to inspect the crank?
Any help would be appreciated
We were out the other night in a field running passes at 3/4 throttle and it all of a sudden just dies. We got it started and limped it home and found that the mag cylinder was not firing. Upon closer inspection the right plug gap was closed and the the prong/electrode were touching. After much googling, I'm down to 3 scenarios that could cause this:
1. piston hit the plug - likely cause is bearing failure in the crank
2. debris entered the cylinder, came between piston and plug - likely cause is piston ring/skirt implode, or bearing bits from crank?
3. detonation.
The engine is not seized, and compression test is 110 / side. After regapping the plug the engine starts and will run with one plug from left/right.
My questions;
1. Does anyone have any experience with this exact scenario?
2. Is there any scenario whereby this is just a fluke and I continue riding as-is?
3. What is the recommended course of action? A top-end rebuild is obvious, but is a complete tear-down in order to inspect the crank?
Any help would be appreciated