Valve noises?

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Wildhorse800
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Valve noises?

Postby Wildhorse800 » Thu Dec 10, 2009 8:48 am

My 800 started making what seems to be a metallic thrashing sound(I hate describing noises).
Light throttle it is fine. It only does it when under a heavy load. Say you are going 25 mph,light throttle. If you mash the throttle and hold it, it is very noisey for as long as you have the throttle wide open. From a mechanic point of view, it reminds me of valve ping.

So, any ideas? Also, valve clearances would be helpful as it may need it done anyways.
2008 Polaris SP800 HO
1999 Polaris SP500
2008 Suzuki M-50
1988 Honda VLX 600

I've been told I joke around too much.
So one day I tried being serious.
Everybody laughed!

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MrBill
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Postby MrBill » Fri Dec 11, 2009 6:27 am

No valve adjustment on the 800's
No adjustment on the 600, 700, and 800s
04 500 HO SP w/ the RZR bling rims/tires and 2 03 Bomber GTX DI

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oldtrucks
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Postby oldtrucks » Mon Dec 28, 2009 10:50 am

Assuming you have the correct viscosity and amount of oil I'd start looking at fuel, especially if you have older fuel or a winter blend that can lead to pinging. Try some new fuel and see if that helps or cures the problem. If that doesn't help try a cooler spark plug.

http://en.wikipedia.org/wiki/Engine_knocking
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Wildhorse800
Knows UPS driver on a 1st name basis
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Postby Wildhorse800 » Wed Jan 13, 2010 9:24 pm

It just sounds like crap when you are on it.

Oh well, run 'er till she breaks!
2008 Polaris SP800 HO
1999 Polaris SP500
2008 Suzuki M-50
1988 Honda VLX 600

I've been told I joke around too much.
So one day I tried being serious.
Everybody laughed!

fenger89
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Re: Valve noises?

Postby fenger89 » Mon Sep 24, 2012 6:38 pm

Did you ever solve the problem? I have same situation


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