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Gas Yamaha Gas Yamaha Golf Cars; G1 through "The Drive" and U-Max Utility Vehicles



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Old 06-02-2016, 07:11 PM   #41
sho305
Vegas modded 420
 
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Yamaha
 
Join Date: Jun 2009
Location: West MI
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Default Re: Still backfiring!

I've always set my carts to idle slow, faster than the gen. I set the speed and the mix so if the pedal is on a little (adjust the cable so it does) it will just idle. I've never had it backfire that way. Others say turn the idle off and so on.
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Old 06-03-2016, 02:48 AM   #42
cgtech
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Yamaha
 
Join Date: Jun 2012
Location: AZ
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Default Re: Still backfiring!

when i run into a stubborn cart, i try a new exhaust gasket & this tightening procedure- loosen (not remove) all brackets at bottom, install gasket, set muffler in place (on all studs), start the nuts on the cyl head, start the nut on the muffler bottom bracket. once all bolts are started & none yet tightened, now tighten the top 2 on the exhaust flange evenly, then tighten all the loose hardware at the bottom brackets. we want the top 2 flange nuts to "pick" the location of the muffler & brackets, so nothing is in a bind.
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Old 06-26-2016, 01:44 PM   #43
mopdog
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Default Re: Still backfiring!

Wanted to put how I fixed mine. After reading and doing allot of what was suggested here nothing worked on my cart. 2008 Yamaha. I bent the idle tab on the carb bank to make sure the throttle was completely closed. Haven't had it backfire once since. Give it a try.
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Old 06-26-2016, 02:13 PM   #44
sho305
Vegas modded 420
 
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Yamaha
 
Join Date: Jun 2009
Location: West MI
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Default Re: Still backfiring!

IIRC only the G1 was set to idle, the rest say turn it off so it closes all the way. I've always run my G9 to idle, though a really slow idle, and my clone runs the same way. I can idle it if I want to keep my foot on the pedal, it is slow enough I can also shift at that idle no problem even when I had stock clutches, if you didn't do it too slowly.

Right exhaust leak could certainly do it. Idle too lean or rich can.

You can also run a bypass switch on the pedal so it stays on with the key, then if you go down a hill it does not kill the ignition....if you get backfires from that, though yes then you have to use the switch, remember to, etc.
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