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Rzr, hard start cold... Help

13147 Views 9 Replies 5 Participants Last post by  tawd77, 
T
My 09 RZR 800 has some issues when starting. Usually, when the engine is cold, you crank the engine, and it will start, and usually cough out of the intake a couple times then die. If you restart it, it will usually run great, and have no issues. Usually just the first, cold start.

Today I noticed it did the same thing, but once it was warm, if I shut it off, it would ocassionally Cough throught he intake every once in a while at an idle. I recently took off the throttle body, and cold air intake off and cleaned them. Im not sure if this would have caused anything.

Anyhow, what can make this thing keep coughing through the throttle body? Would that be bad plugs, or? Thank you for any help you can provide!
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rzrman54
My first pump started with hard starting then no power. Changed #2 pump started out easy starting and power is back great. BUT this weekend no top end power again in the dunes. Going to put a gauge on it and go run it hard to see if the pressure drops at the top end pressure at idle is 42psi. It starts out running hard but in a 1/4 of a mile the rpm starts to drop and slows down. I think pump #2 is going out I change it two weeks ago if so no more Polaris pumps.
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