new 800 engine noise

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new 800 engine noise

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new 800 engine noise - 9/26/2008 10:07:39 PM

bjs

Posts: 5
Joined: 9/21/2008
Status: offline

Hello, new to forum and just purchased a new 800 sportsman. I have about 75 miles on it and have noticed a pretty significant rattle sound coming from the right side flywheel cover. It gets louder under acceleration, I did a search and it sounds like some people are hearing rattling sounds on the 500's and 700's. I also have an RZR and haven't noticed it on that, but the engine is isolated more from the driver. Just wondering if anyone else has noticed this and if it is normal? thanks

Post #: 1

RE: new 800 engine noise - 9/26/2008 10:19:34 PM

sfd_324

Posts: 357
Joined: 1/24/2008
From: Sylacauga, AL
Status: offline

only rattle i have found is the battery hold down bracket & the aluminum heat shield on the drivers side behind the removable panel...

(in reply to bjs)

Post #: 2

RE: new 800 engine noise - 9/27/2008 8:43:59 AM

contentsunderpressur

Posts: 467
Joined: 9/4/2008
Status: offline

Mine did that yesterday. Only at low rpms.

_____________________________

03 700 sportsman SOLD
6 in monkey lift
29.5 laws
Progressive spring kit
relocated radiator
snorkeled
1.5 wheel spacers
fender extenders

08 800 sportsman (stealth)
Bone stock for now.

05 Honda Foreman 500
stock with a snorkel

(in reply to sfd_324)

Post #: 3

RE: new 800 engine noise - 9/27/2008 1:08:46 PM

HIGHOCTANE

Posts: 271
Joined: 7/22/2008
From: North Carolina
Status: offline

Mine has sort of a light knock in that area, I investigated it and have chalked it up to normal cylinder firing noise. Obviously when the cylinder fires it is an explosion, that is the noise I am hearing I believe. I'm not sure why it is so much more pronounced on the 800 than on other machines I have ridden/heard. Sounds kind of like a diesel lol. Not sure if this is what you might be hearing?
Other than that, the battery hold down, heat shields(usually a lighter "tingy" sound),exhaust in the rear, and loose winch fair lead rollers(which BTW gave me a fit finding because the sound apeared to be coming from the engine, weird how sounds can be thrown. You will see them spinning from vibration and the rattle is loud!) are common sources of rattles. A piece of broom stick cut off can help isolate where a noise is coming from. One end touching the suspected area,the other to your ear. Screw driver can work also.

< Message edited by HIGHOCTANE -- 9/27/2008 1:15:05 PM >

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2009 Sage Green 850 XP
2008 Stealth Black Sportsman 800 SOLD

(in reply to contentsunderpressur)

Post #: 4

RE: new 800 engine noise - 9/27/2008 2:57:56 PM

popo450

Posts: 23
Joined: 7/3/2008
Status: offline

mine does it on my 450 but its onli at low rpm's n its on the right side at the pull starter or somewhere around that area ive had 2 popo's n both did it so its common

(in reply to HIGHOCTANE)

Post #: 5

RE: new 800 engine noise - 9/27/2008 5:26:47 PM

libertypolaris

Posts: 51
Joined: 8/8/2008
Status: offline

it is a common noise in the polaris it is the starter bendix chattering. the singles do it louder than the twins but they all do it some. there is no fix for it either

(in reply to popo450)

Post #: 6

RE: new 800 engine noise - 9/27/2008 6:31:37 PM

dw700

Posts: 39
Joined: 7/26/2008
From: Benton, La
Status: offline

The older Harley's have the same upper engine noise..Just a characteristic these bikes have..

(in reply to libertypolaris)

Post #: 7

RE: new 800 engine noise - 9/27/2008 11:02:30 PM

bjs

Posts: 5
Joined: 9/21/2008
Status: offline

Thank you for the feedback, sounds like I shouldn't worry to much about it. I guess I'll just run it hard and worry about it if it gets worse.