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After Harley Davidson muffler what do I need? (Read 262 times)
stewmills
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Re: After Harley Davidson muffler what do I need?
Reply #15 - 04/09/19 at 10:33:16
 
May be too rich at idle.

If it dies with choke but runs without it, think about it this way: Choke cuts off the air to the carb making the mixture extra rich (less oxygen can get in) to help start and warm the bike.  So, if yours will not run when you pull the choke to RICHEN the mixture but runs well with no choke when the mixture is LEANER then that tells you something.

Is the raptor a genuine Yamaha or chinese knock-off. If it isn't genuine Yamaha then that is the start of your problem and that needs to be addressed before you chase the carb settings.
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justin_o_guy2
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Re: After Harley Davidson muffler what do I need?
Reply #16 - 04/09/19 at 10:47:45
 
the raptor a genuine Yamaha or chinese knock-off. If it isn't genuine Yamaha then that is the start of your problem and that needs to be addressed before you chase the carb settings.

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Re: After Harley Davidson muffler what do I need?
Reply #17 - 04/10/19 at 10:55:30
 
Make sure your idle is properly adjusted.  Needs to be around 1100 rpm if I recall and that WILL NOT sound like a Harley. (It's a much higher idle than a typical HD.)  

Generally speaking, it's not the best practice to change several things at once.  It's a lot easier to diagnose issues when you only make one change at a time.
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« Last Edit: 04/10/19 at 12:19:51 by ohiomoto »  
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Re: After Harley Davidson muffler what do I need?
Reply #18 - 04/10/19 at 17:08:16
 
I just switch back to original suzuki petcock and engine dies same way so I think petcock is not a issue here and I will buy new raptor petcook from dealership. Once again when I am shifting 2nd to 1st gear when clutch is fully disengage and gas throttle is off(I didn't try at other gear) engine dies.  After switch back to original when cold start without choke bike dies and with choke stay alive Toronto is still cold so I think original petcock is ok. What will be my next step to ride bike this spring?
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Re: After Harley Davidson muffler what do I need?
Reply #19 - 04/10/19 at 22:53:43
 
I had the same problem with the bike dying when I dropped the revs. My issue was that I had set the idle to low ... As Ohiomoto said "Make sure your idle is properly adjusted."
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