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Old 05-24-2013, 05:46 AM
Mudder96's Avatar
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Thumbs down 2003 sportsman 700 twin engine noise?

Hey guys I have a 2003 sportsman 700 twin that has started to have an engine Noise the noise is louder at an ideal but when you have the bike in neutral and rev it the noise gets quiter as though whatever is ticking is moving faster then before to lower the noise? I've done loads of maintained to this bike just not engine work yet.. Aha talked to my grandfather who used to be a mech in the automotive industry, and he seems to think timming chain is loose or worn out to allow it to slap against the caseing? I have not got my dealers option on this matter yet, hope not to have to as that may lead to more money having to take it in.. Anyway I am just fishing for more ideas before I get into doing the wrong things or looking in the complete wrong area. The noiseis louder when standing on the right hand side of the bike, the weird part is I just had this bike down for mantiance ( replaced all bushings and did an oil change plus filter, did a tests run and now this happend. Any help would be appreciated as its riding season and once again the polaris is down.aha thanks guys.
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Old 05-24-2013, 08:28 AM
pgjeepster's Avatar
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Check for piston scrub; the rings rubbing off the cylinder wall.
2011 Sportsman 500HO.Front & rear bumpers, 2-up box.winch,26" pxt tires,windshield,gun boot,plow, heated grips & thumb, heated seat.
2003 Sportsman 700 twin.Front & rear bumpers,front spring adjuster,26" mudlites, 2-up box, HID lights,3500 lb. winch, gun rack,plow,hand guards.
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Old 05-24-2013, 10:15 AM
bailbud's Avatar
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mine was the same kind of noise and was the silent chain in trans ,pull the plug look for wear on plug .
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Old 05-24-2013, 06:50 PM
Diesel man 03's Avatar
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bailbud, by checking the plug for wear, what exactly are you looking for?
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Old 05-29-2013, 09:59 AM
bailbud's Avatar
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wear on the inside and when u put a finger in the hole u can feel the chain slap or excess play. u should be able to see scuff marks on plug
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