800 rmk keeps dying

V

viking68ak

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Feb 7, 2011

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• Feb 12, 2011

• #1

I have a 200 RMK 800 that runs like a champ. For about 1/4 mile, then it just dies. After it sits for a couple minutes it fires right up again and I can ride for another 1/4 mile then it dies again, and so on. I have replaced the plugs and the coil. I don't think its electrical since it has good spark. Fuel pump maybe? Anybody have any ideas?

 

NapaMatt

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• Feb 12, 2011

• #2

fuel pump

or broken water pump belt is it over heating?

 

V

viking68ak

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• Feb 12, 2011

• #3

It is not overheating, Fuel pump sounds like it might be right, but why would it run great for 5 minutes and then die?

 

rmkboxer

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• Feb 12, 2011

• #4

when it shuts off can you pull the motor over, could be oil

 

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viking68ak

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• Feb 12, 2011

• #5

I can pull it over right away after it dies, but please explain why it could be oil. Too much? Too little?

 

M

miller tools

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• Feb 12, 2011

• #6

dies

FUEL FILTER CHECK IT NOW

 

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retiredpop

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• Feb 12, 2011

• #7

You ever looked at the pistons for signs of lean seizure? That's about the distance you can go before it re-seizes. Usually it won't lock right up and will start again. Eventually it will die totally.

 

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viking68ak

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• Feb 13, 2011

• #8

I guess I don't know as much about engines as I thought. Please explain "lean siezure" I *** ume it would be the engine not getting enough oil and siezing up enough to kill it?

 

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retiredpop

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• Feb 14, 2011

• #9

Lean seizure means the engine is not getting enough fuel so it runs hotter than it should. A 2 stroke relies on fuel mixture to cool the piston crown to a certain extent. If it does not get enough fuel the piston gets so hot that it starts to melt. Usually before you melt a hole in the top the piston will expand so much from the heat that it actually 'sticks' to the cylinder wall resulting in a seizure. Not getting enough oil will also cause lots of problems too but usually in the crankshaft and rod bearings.

 

Last edited: Feb 14, 2011

S

SD Coyote

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• Feb 14, 2011

• #10

miller tools said:

FUEL FILTER CHECK IT NOW

Click to expand...

agree; it sounds like a partially plugged filter that is causing the sled to run out of fuel. After a few moments, the bowls refill and you go another 1/4 mi.

 

V

viking68ak

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• Feb 15, 2011

• #11

okay, thanks guys. I will check out the fuel filter and pump tomorrow.

 

rmkboxer

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• Feb 15, 2011

• #12

there is no external fuel filter, I have seen sleds that will run then seize and then you can start them, usually can't pull it over right away if there is lack of or no oil.