94 EZGO Marathon 4-cycle sooty plug and white smoke

1989Marathon · 06-21-2015, 12:34 PM

Quote:

Originally Posted by EKP

Enough rpms to "squeeze" the belt but not move it up. I wouldn't say the motor stumbles...more like steady a "wrap-wrap-wrap".

Have you tried running it without the belt on?

EKP · 06-21-2015, 12:56 PM

Yes! Pinching off the fuel supply worked!

It rev'ed so high that the motor cut out. What causes that?

So it's a carb issue?! Which way do I adjust the float? Could it also be the main jet? I couldn't remove it for a thorough cleaning.

1989Marathon · 06-21-2015, 01:14 PM

The motor died because it ran out of fuel. You had the line pinched off. The float needs to be adjusted so the fuel supply is shut off sooner. That usually means bending the tang away from the float, and toward the needle/seat.
It could also just be debris keeping the float needle open.

EKP · 06-21-2015, 01:49 PM

Thanks again.

1989Marathon · 06-21-2015, 01:54 PM

Yep.
Let us know how it turns out.

EKP · 06-22-2015, 01:25 PM

I installed a new carburetor today and it runs great. Thanks for your help!

06-21-2015, 12:56 PM	#12
EKP Not Yet Wild Join Date: May 2015 Posts: 8	Re: 94 EZGO Marathon 4-cycle sooty plug and white smoke Yes! Pinching off the fuel supply worked! It rev'ed so high that the motor cut out. What causes that? So it's a carb issue?! Which way do I adjust the float? Could it also be the main jet? I couldn't remove it for a thorough cleaning.
EKP Not Yet Wild Join Date: May 2015 Posts: 8

06-21-2015, 01:14 PM	#13
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730	Re: 94 EZGO Marathon 4-cycle sooty plug and white smoke The motor died because it ran out of fuel. You had the line pinched off. The float needs to be adjusted so the fuel supply is shut off sooner. That usually means bending the tang away from the float, and toward the needle/seat. It could also just be debris keeping the float needle open.
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730

06-21-2015, 01:49 PM	#14
EKP Not Yet Wild Join Date: May 2015 Posts: 8	Re: 94 EZGO Marathon 4-cycle sooty plug and white smoke Thanks again.
EKP Not Yet Wild Join Date: May 2015 Posts: 8

06-21-2015, 01:54 PM	#15
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730	Re: 94 EZGO Marathon 4-cycle sooty plug and white smoke Yep. Let us know how it turns out.
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730

06-22-2015, 01:25 PM	#16
EKP Not Yet Wild Join Date: May 2015 Posts: 8	Re: 94 EZGO Marathon 4-cycle sooty plug and white smoke I installed a new carburetor today and it runs great. Thanks for your help!
EKP Not Yet Wild Join Date: May 2015 Posts: 8

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