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Old 03-03-2014, 02:56 PM   #1
waf8607
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Default G16 only runs full throttle with choke pulled

Have a Yamaha G16 it bogs down at half to full throttle, when choking it runs excellent. I have read alot of posts about it being many different things, but what I did quickly to narrow the problem down to the carb it self and not intake, gaskets, vacuum leaks etc... I have 2 G16 carts one runs good other one doesn't like I mentioned, I swapped carbs and the problem followed the bad carb, so I know the problem is the carb. Removed all jets and completely disassembled it and blew it all out with compressor prob 3x now and still same problem, it only runs good with choke pulled. Could the jets be bad since I know they are clean, having blew it out 3x? Thank you in advance.
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Old 03-03-2014, 03:38 PM   #2
DOOmsman
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Default Re: G16 only runs full throttle with choke pulled

Two thoughts, the float is out of adjustment or you arn't getting the jets clean.
Use a torch tip cleaner to clean all the holes.
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Old 03-03-2014, 06:49 PM   #3
BIGBREW
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Default Re: G16 only runs full throttle with choke pulled

fuel pump!
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Old 03-04-2014, 02:07 PM   #4
waf8607
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Default Re: G16 only runs full throttle with choke pulled

DOOmsman:
I can take the carb apart and clean the jets again. The last time we had it off we made the hole a bit bigger where the float needle goes. Not sure what that port is technically called, but it is where the fuel comes into the carb at. How would you adjust a float?

BIGBREW:
it can't be the fuel pump, because I put good working carb in the cart, and it works fine. swapping between different carts and carbs, the problem follows the carb.

Thank you.
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Old 03-04-2014, 03:24 PM   #5
dbmachine
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Default Re: G16 only runs full throttle with choke pulled

Not sure how to adjust the float either on the g29 carb i have. All there is is a pin , metal clip, the plastic float, and the needle.
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Old 03-04-2014, 04:46 PM   #6
DOOmsman
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Default Re: G16 only runs full throttle with choke pulled

Pull the carb and remove the bowl, invert the
carb and look at the float, it should be level with the rim.
If you look at it you will see were to bend the hinge to
get it level.
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Old 03-04-2014, 05:23 PM   #7
pachanga90
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Default Re: G16 only runs full throttle with choke pulled

Pull the main-jet out,and make sure its' clear,I think that jet has orifice-passages in the sides too.If they are clogged,it won't run right.With this wonderful gas we have,carb-maintainence is very important.Run something like Star-Tron in your fuel to help eliminate future issues,the stuff works awesome.
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Old 03-04-2014, 06:59 PM   #8
smallblock450sl
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Default Re: G16 only runs full throttle with choke pulled

You did what to the needle seat opening Sorry to say the G16 and up carbs don't have an adjustable float I agree, the main jet is useually the cluprit with thes simptoms. Good luck
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Old 03-04-2014, 09:56 PM   #9
BIGBREW
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Default Re: G16 only runs full throttle with choke pulled

Sorry didn't read the whole post......Whoops.
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Old 03-05-2014, 02:57 AM   #10
s10king91
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Default Re: G16 only runs full throttle with choke pulled

Why was this moved to the for sale forums?
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