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Polaris 500 Wore Cam shaft look
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- Опубліковано 7 тра 2018
- Looking at my Polaris Sportsman HO 500 4x4 Cam Shaft. It's a common problem with these Engines and can be easily fixed.
Signs of problems, not taking throttle, blowing fuel out the back of carb.
SORRY If I don't respond to Comments. UA-cam doesn't notified me of comments!!!
This video deserves way more views and likes than it has
Right? It would seem that with over 11K views more folks would have been glad to have found this video that explains it all!...
Thank you very much for this video.
My Magnum 500 is doing just this so I might pull the rocker cover off and have a look!
Good on you for posting this to help others.
What I don’t understand is how Polaris could release such a defective product!
Thank you for taking the time to make this video. I was headed down the "bad carburetor" or "timing" path and your tip about the gas blowing out the intake really helped me diagnose the camshaft in my 02' Ranger 6x6. Without your video I'm sure I would have wasted some money on un-needed repairs. As it was $76 bought me a new cam, rockers, and gasket set off eBay (super deal). Wish I could paste a bad cam photo - it was toast - how did it run to half throttle I'll never know.
Can u post a link tk where u got parts please. Getting ready to do the same thing. Ty
You got a great deal!! A lot of the parts now are dropping price like crazy!! I just wish I had known about the cam sooner too, I re-timed my motor 5 times cleaned carb 3 times checked stator output voltage wiring everything I could think of.... A simple fix and easy to do in the frame!!
At the beginning of it getting to the "round" shape it would run 1/2 throttle just find before sputtering. After it finally rounded off it would idle fine but as soon as you touched the throttle it spit gas in vapor form out the carbs back (in to air box) and would cut out and sputter and just die. What was happen was it sucked gas n air in couldn't get it out the exhaust and when it came around to pull gas air in the pressure of combusted gas (smoke) blew the new gas out the carbs first then sucked new gas in to burn. Lol. Like a in/out single valve motor. 😂
You made my day ,bcuz that driven me crazy after replace almost all ignition new carb and head gascket
Thank you, Thank you
Your loss is not completely in vain - thank you for the explanation and full description of the issue. Ordering a new cam kit shortly. Question - should I replace the timing chain as well? Are you aware of any oil flow issues to the center of the cam, or is it just cheap metal? THANKS for the post!
Was there a recall or did Polaris change this design or correct it at all? I bought a used 05 about 3 years ago, only problem ive had has been the stator, but i wonder if my machine is eating the camshaft every time i start it
Great Video!
I lined everything up, even found dots on the bottom wheel, in line with the line you are talking about. However, when I go to turn the motor over it stops about 3/4 of a turn. Take the rockers off and it spins fine. Is it possible that the cam shaft is in wrong? Valve stems are off? Any suggestions?
Thanks General. I've heard that polaris fixed this problem by the mid 2000's. Mines an '09 and has all the symptoms so maybe they didn't, so I'd like to look for after market cam and rockers. Anyone know of any?
Wow. How many mile on that? How old? Mine is 01 HO that's TWENTY YEARS OLD,and in great condition with about 5K on it. Amsoil lubricants since day one.
Thank you for the video
This turned out to NOT be my problem, but, good info, regardless. Gave ya a like
What was your problem?
I'm also curious
@@trustme7731 Carb and fuel issues....sorry for delay
What year, and after the obviously crappy part product, has Polaris change the way they make it? If so what year ?
I'm not sure but I know the Polaris Ranger 500 has same problems too. All the 500 have same problem as far as I have ever researched!
How long did it take you to pull the motor on the quad? Would you suggest replacing the Cam and rockers while the engine is still in the frame?
Camshaft and rockers can be done while engine is in frame, per service manual. Sure makes for a better video when it's on the bench and we can see what's going on. I'm afraid this is what I'm gonna find on mine, too
Sorry for not responding UA-cam never has told me I have comments!!
You can easily do it on frame but to pull motor off frame only took about 15 mins after all plastics and primary clutch was removed to unbolt the clutch cover from the motor.
How is compression ?
The compression seemed good! Why I couldn't figure out what was wrong! I did timing 5 times, voltage check on stator, compression check (I think around 90-105?) I replaced cylinder n piston (NEW) cleaned carb 3-4 times.... finally gave up got used motor.
thats one of the worst cams i ever seen