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08-07-2010, 11:13 PM
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Junior Member
My Ride: 86 trx250r
Feedback Score: 0 reviews
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My ATV: 86 trx250r
Member #483
Join Date: Aug 2010
Location: Lehi, UT
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Jetting problems on my 86 trx250r
I just recently moved from Oregon to Utah, with an elevation increase of about 5,000 feet. My quad ran perfectly in oregon. I took it to local honda world to have the rejet it for me because of the move. When I got it home it fired up right away. As I ride it and go through the gears it seems like my powerband hits really really early and it won't idle no matter how long I warm it up. Any ideas? I want my bike to run the way it was before.
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08-09-2010, 03:16 PM
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Junior Member
My Ride: 2011 RANCHER 420 4X4
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My ATV: 2011 RANCHER 420 4X4
Member #484
Join Date: Aug 2010
Location: WV
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Bigger pilot jet.you need more fuel at higher altitude.i would say they only changed the Main jet.you might try backing out the air screw.if that wont straiten it out.bigger pilot.
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08-10-2010, 12:34 AM
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Senior Member
My Ride: 07 TRX450ER/07 Grizzly700
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My ATV: 07 TRX450ER/07 Grizzly700
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Location: Southaven.Ms
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Hate to say it but it won't ever run like it did in oregon, high altitudes kill a motor, you will be able to get it to run better than it does know, good luck.
__________________
07 TRX 450ER 14/1 CP piston/ +1 valves intake & exhaust/ 208 web cam/ High Rev valve springs/ potred & polished/bored carb by DASA/ DASA Classic exhaust / Leagers +2 MX Lt a-arms/ Ohlins Lt front & Fox Podium X DSC Rear shock and LSR DC-6 linkage/LSR duel row carrier/ G-Force axle/ Pro Armor skid & rear bumper/ Hiper Bead locks/ Quadcross Pro's/ Houser +1 stem/ Precision stablizer/ Pro Taper Fat bars/ ASV levers/ Quadtech hump seat. My trail ride is a 07 GRIZZLY 700 !
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08-16-2010, 10:46 PM
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Member
My Ride: Foreman 400/Grizzly 660
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My ATV: Foreman 400/Grizzly 660
Member #407
Join Date: Jul 2010
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Quote: Originally Posted by Masterlink
Bigger pilot jet.you need more fuel at higher altitude.i would say they only changed the Main jet.you might try backing out the air screw.if that wont straiten it out.bigger pilot.
No, you need a smaller jet at higher altitude. There's less air at higher altitudes, so you need less fuel to keep the air/fuel mixture where it needs to be.
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