2017 sportsman 450 HO turns over but won't fire
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By Malta54
I own a 2007 Polaris Sportsman EFI X2 model and have for the past months been experiencing loads of issues. Basically the Sportsman will only start if the throttle lever is pushed and will not remain on idle. This situation has persisted for months now and I have replaced the following parts:
Sparking Plug
Fuel Injector
Fuel Pump
Fuel Filter
Fuel Valve
Fuel lines
Power Control Module
The last part replaced was the Power Control Module and the Sportsman was tested and worked fine on a couple of occasions which were days apart so much so that some weeks later I took the Sportsman for an extensive ride and it worked perfectly. This was three weeks ago and today I tried to start the ATV it worked fine a few minutes and decided to switch it off so that I could continue with some prep work. A few minutes later tried to start it up again but noticed that it would only start if the throttle lever was pushed and once I removed my finger from the throttle lever the engine would not stay in idle and would simply shut down. Several attempts were made to start this and also tried to re-adjust the setting by turning the built in wheel like mechanism in the throttle cable but it was to no avail.
The above have been repeating itself on an off basis. Each time a part is replaced the ATV would work and then all of a sudden will not keep its idle. At this stage I cannot think of any other solution other than possibly some sensors which might have an intermitting fault but I cannot really say.
Would greatly appreciate any assistance.
Thanks in advance.
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By heath
i just bought a yamaha moto 4, i have sprayed 'start ya barstard' into the carb and on the spark plug and it doesnt even fire! although when i have the spark plug on the outside of the motor it shows spark, the engine also leaks oil from the starter,
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By Gwbarm
I finally got around to working on the TRX, this has been an ongoing problem with this machine. This is a machine that we keep on my Fathers property, i dont see it that often, my brother haad it professionally repaired last year and year before same problem, the new starter gears and bypass gears last about a year and the machine is not used that often, he said he was done with it , so i thought i should go take a look. Sure enough the gears were all malled again.
IMG_4910.mov There is some slack in there but most is taken up by the gear cover,if anyone with history with these machines has had the same problem, let me know your findings. Where i am now im looking for finding replacement honda gears on Ebay and try those. I suspect the original was replaced with aftermarket gears years ago and they just worse quality as the years go by.
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By robert63
my cat only has 100miles on it and is in mint cond. since i bought it new in 2009 it has had what i believe to b a carb problem. going down a steep hill makes it want to stall. as soon as u r on level ground its fine.and at top speed it kinda acts like its starving for gas. u let off the throtel a bit n its fine. idels good starts good. hav taken it back to dealer several times. they eithor said it didnt do it or mayb bad gas. my friend says it sounds like the float level isnt rite. any advise would realy help.
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By k9_bones
Hello, been lurking for a while fixing some of my problems after reading others unfortunate issues. However I can’t find the answers I need. Back story I have a 03 Kodiak 450. A coworker was going to take it to the dump, he said it wouldn’t run. Some mice got in there while it was stored for a few years and chewed up the wire harness. All the wheels were locked up and he didnt want to mess with it. Not knowing if it would run, for a week or so I spliced most of the wires back together. Replaced all the brake calipers and rear brake cable and rebuilt the carb. So far I have put 30ish miles on the bike and seems to run decently. Now my questions. When I put it in gear and the display light showed it is in gear I have to bump the throttle to make it actually go into drive or reverse. It doesn’t slam In gear but kind acts if you let the clutch out to fast on a manual. Is that normal, seems it’s thinking about going In gear then it goes after tapping the throttle. 2nd question, when I use the diff. Lock it acts like it is in a limp mode just by accelerating the lest little bit. It starts to sputter and won’t allow it to have any power. It only does this with the diff lock on. 3rd. The display is stuck on KMH. How do I change it to MPH. I followed all the steps I saw on YouTube with no luck. When I got power to the display it was in MPH but it switched its self and now I can’t get it back. Next are the rear u-joint the same as the front u-joints. I have sprung a oil leak from the rear diff at the drive shaft and need to replace the seal. Sorry for the long post and thanks in advance for any help. I’m sure I will find more things in the future.
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