Raptor Forum banner
1 - 9 of 9 Posts

·
Registered
Joined
·
2 Posts
Discussion Starter · #1 ·
My raptor cut out while riding and locked up solid. When you press the start button it’s like the battery is dead, but if you put it into top gear and rock it back and forward it’s like it frees up again and will start on the button again but will only go 100 yards and cuts out again. Has this happened to anyone before?
I was told to check valve clearances first that it may not be allowing the decompression pin correctly?
 

·
Registered
Joined
·
892 Posts
Yes they can seize, cool and then run until they seize again, more than once. I've had a few engines come in the shop where people have done this. They get the engine so hot the oil will actually turn into something that looks like grease. Pull the drain plug and nothing comes out ;) A bearing will seize then cool and loosen letting the engine run again. Have also seen rings pinch and after the engine cooled and rocked to free the piston/rings, run again. Heck I think 2 strokes were built to do it!

They can also hydro lock from fuel/coolant and seem seized and after the fluid has worked its way past the piston/rings run again.
 

·
Registered
Joined
·
300 Posts
Crank rod bearing is going out. Common problem. Happened to me twice on my turbo raptor. As it cools the bearing loosens up but with heat it expands and locks up. Eventually after many heat cycles she will lock up completely. Time for a rebuild on the motor. Probably not what I wanna hear but 99.9% that’s ur issue


Sent from my iPhone using Tapatalk
 

·
Registered
Joined
·
2,214 Posts
Pull the plug on the side of the case and try to spin the crank by hand while in neutral, with the spark plug out. This will tell you with 100% certainty if you have a serious issue


Sent from my iPhone using Tapatalk
 
1 - 9 of 9 Posts
Top