sputtering/dieing 07 sportsman 500
#1
sputtering/dieing 07 sportsman 500
Well for the past year my 07 sportsman 500 EFI deluxe has had a ver small sputter/miss at low speeds/rpms crawling around... as soon as you give it a bit more gas it clears out, anything above 10 or so mph was fine...
In the past two weeks this has gotten so bad that i can't (afraid to) even drive it now. It has barely enough power to go from a stop unless you are over 1/2 throttle and really getting into it... sometimes if you blip the throttle on off on off with it at 1/4 or more throttle it will get going... It idles rough at 1800 rpms, it varies 20-30 or so rpms intermittently. All this has been intermittent though... i drove it for an hour, then turned it off, let it sit for 20 minutes. got back on it , started it, and it died. then started it again and it idled real rough, i gave it gas and made it go, but at under 10 mph it was bucking me and missing real bad.
Things i did to it lately:
new plug
new oil/filter
i have been running 87 octane in it, hoping to help it i put in 89... it didnt help at all
new air filter
none of this helped... and it keeps getting worse...
When i floor it, i am just as fast as a 2010 sportsman 500 (carb) and it runs great at full throttle.. however out of 5 runs, he did win twice... and thats when my problems had got worse.
what do i need to replace?
also, how do you tighten up the brakes on this machine... my friends quad stops A LOT quicker then mine and the handle seems a lot stiffer, mine moves more. The brakes also squeek when driving slow, however they appear fine, rotors feel good also.
In the past two weeks this has gotten so bad that i can't (afraid to) even drive it now. It has barely enough power to go from a stop unless you are over 1/2 throttle and really getting into it... sometimes if you blip the throttle on off on off with it at 1/4 or more throttle it will get going... It idles rough at 1800 rpms, it varies 20-30 or so rpms intermittently. All this has been intermittent though... i drove it for an hour, then turned it off, let it sit for 20 minutes. got back on it , started it, and it died. then started it again and it idled real rough, i gave it gas and made it go, but at under 10 mph it was bucking me and missing real bad.
Things i did to it lately:
new plug
new oil/filter
i have been running 87 octane in it, hoping to help it i put in 89... it didnt help at all
new air filter
none of this helped... and it keeps getting worse...
When i floor it, i am just as fast as a 2010 sportsman 500 (carb) and it runs great at full throttle.. however out of 5 runs, he did win twice... and thats when my problems had got worse.
what do i need to replace?
also, how do you tighten up the brakes on this machine... my friends quad stops A LOT quicker then mine and the handle seems a lot stiffer, mine moves more. The brakes also squeek when driving slow, however they appear fine, rotors feel good also.
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