01 660 popping and backfire - Yamaha Raptor Forum
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Old 05-06-2009, 11:01 AM Thread Starter
 
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01 660 popping and backfire

i have a 01 660 with a pipe and jetted carbs k & n . Last ride was great until it stalled, now it will only fire up with a squirt of starter fluid and will barely run popping and backfireing. Carbs were taken apart cleaned and rebuilt using existing bigger jets from previous owner who abused it with little or no maintenance. pilot jets are adusted according to book. Should i do compression check first ? wanna ride please help.
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Old 05-06-2009, 11:28 AM
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Have u bypassed the parking brake and reverse limiter To me it sounds like one of the 2

03 660....SOLD
98 YZ125.....Rubbermaid bin special!!!
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Old 05-06-2009, 02:40 PM
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ur parking brake mite not be adjusted correctly my 660 did that to me 1 day to i adjusted it and now its fine !!
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Old 05-06-2009, 05:41 PM
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Check your boots. sounds like one has popped free.

'01 660 Raptor, Burgard +2+1 arms, YFZ Shocks, LSR anti-vibe, CTR pipe, jetted, K&N
'01 Polaris Scrambler 400, K&N
'02 Honda 400ex, Big Gun pipe, jetted, K&N, Lonestar +2 A-arms, Lonestar anti-vibe
'04 Suzuki LTZ400
'16 RZR XP4 1000 Turbo
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Old 05-06-2009, 08:33 PM Thread Starter
 
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Wow thanks for the quick reply to everyone ! I'm not sure what the parking brake and the reverse switch has to do with my performance issue. I'm willing to try anything, would anyone be able to give me a little direction with this as far as how to bypass brake and limiter, thanks again for the help.
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Old 05-06-2009, 09:23 PM
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Here is a couple links that should help......

https://www.raptorforum.com/forums/showthread.php?t=9356

and then for the reverse there is a little green wire down by the shifter that plugs in to the engine, just ground that to the frame or engine.

03 660....SOLD
98 YZ125.....Rubbermaid bin special!!!
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Old 05-06-2009, 09:28 PM
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Quote:
Originally Posted by QuadManiac View Post
Check your boots. sounds like one has popped free.
+1. It sounds a lot like your boots came loose or something... I had the same problem and it was my boots

2002 Yamaha Raptor 660
DG Alloy Series Nerf bars
DG front bumper
DG full under and A arm skids
GYTR slip on exhaust
Jetted
Turf Tamers
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Old 05-06-2009, 09:44 PM
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The rev limiters keep the engine from revving when you are in reverse or the PB is on. A common failure in one of these circuits will cause the limiter to be on all the time. This causes the engine to sputter when you barely get on the throttle but has NO effect on starting or idle.

This is NOT your issue. You can't even start your bike. My bet's on the boots.

'01 660 Raptor, Burgard +2+1 arms, YFZ Shocks, LSR anti-vibe, CTR pipe, jetted, K&N
'01 Polaris Scrambler 400, K&N
'02 Honda 400ex, Big Gun pipe, jetted, K&N, Lonestar +2 A-arms, Lonestar anti-vibe
'04 Suzuki LTZ400
'16 RZR XP4 1000 Turbo
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Old 05-06-2009, 09:59 PM
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Ok I just figured since he was there squirtin starting fluid he would notice the boots, but I guess I would probably miss them

03 660....SOLD
98 YZ125.....Rubbermaid bin special!!!
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Old 05-06-2009, 11:20 PM
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Try disconnecting the voltage regulator, if this solves your problem, your stator is at fault.......


686 three plugger with HV porting, 39 FCRS, Curtis Sparks exhaust, Dyna FS CDI
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