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Gas EZGO Gas EZGO Marathon, Medalist, TXT and RXV.



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Unread 08-24-2015, 11:58 AM   #1
Not Yet Wild
 
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Join Date: Jun 2015
Location: Mile High Denver Colorado
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Default Take a long time to start then run GREAT!

Hello All

I need a bit of Help. This is a 94 Marathon.

New 375 CT rebuilds. We have to feather the throttle for close to a min before it fires and runs. Sometimes has a small bog then runs GREAT!

Has new coil, new carb, new fuel pump and all new lines.

Any ideas?

CT will not call me back...
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Unread 08-24-2015, 02:21 PM   #2
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Join Date: Apr 2011
Location: Washington State
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Default Re: Take a long time to start then run GREAT!

Ha ve you adjusted your valve lash? Undo fuel line at carb, turn motor over and see if your pumping a charge of fuel.
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Unread 08-24-2015, 05:20 PM   #3
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Default Re: Take a long time to start then run GREAT!

Quote:
Originally Posted by jeffrun View Post
Ha ve you adjusted your valve lash? Undo fuel line at carb, turn motor over and see if your pumping a charge of fuel.
No. It was a brand new motor. Assumed the lash was set correctly...

I will take a look. Can that cause a boggy start?
Once it's going it runs hard!
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Unread 08-24-2015, 05:34 PM   #4
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Default Re: Take a long time to start then run GREAT!

Sounds like a fuel supply / air issue.
Check all the fuel lines for air leaks on the suction side.

As stated above before firing it up pull the line at the carb and place it in a bottle.
Start cranking it over and see if fuel is immediately being pumped. If it is not you are loosing prime from a leak, bad pickup tube, bad check valve, bad carb float ect.


If you have fuel from the start then we should look in another direction.
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Unread 09-05-2015, 05:45 AM   #5
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Default Re: Take a long time to start then run GREAT!

I had a 295 engine doing the same thing....check that the governor linkage on the carb is free and allowing the butterfly to open...mine was sticking and keeping the butterfly closed unless you pumped the pedal.
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Unread 09-06-2015, 06:35 PM   #6
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Default Re: Take a long time to start then run GREAT!

Mine did the same thing, it had a bad fuel pump.
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