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06-23-2018, 06:23 PM
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#1 |
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Not Yet Wild
Join Date: Jul 2009
Location: marion ohio
Posts: 71
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88 marathon no accerlation
my marathon bogs down acts like running out of fuel have to pull choke
out about halfway then seem to run better open to any ideas |
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06-23-2018, 07:38 PM
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#2 |
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Gone Wild
Join Date: Feb 2008
Location: Brooklyn, Michigan "Home of M.I.S."
Posts: 3,667
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Re: 88 marathon no accerlation
Crank seals seems to be a problem on 2 cycles.
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06-23-2018, 07:46 PM
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#3 |
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Test before replacing
Join Date: Aug 2013
Location: Ohio side of the Pennsylvania border.
Posts: 3,496
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Re: 88 marathon no accerlation
Could be a plugged exhaust.
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06-23-2018, 07:47 PM
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#4 |
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Gone Wild
Join Date: Jun 2015
Location: NW Iowa
Posts: 1,669
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Re: 88 marathon no accerlation
Give carb a good cleaning pull the Jets out and clean then use compressed air and blow through all the passages.. if that doesn't fix it as stovebolt mentioned it's most likely crank seals
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06-23-2018, 08:52 PM
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#5 |
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Gone Wild
Join Date: May 2014
Location: Ohio
Posts: 185
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Re: 88 marathon no accerlation
You can also check your fuel pump to make sure it's working properly. Take of the line from the carb and crank it over and see if it's pumping.
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06-24-2018, 11:19 AM
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#6 |
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Not Yet Wild
Join Date: Jul 2009
Location: marion ohio
Posts: 71
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Re: 88 marathon no accerlation
it also backfires when you let off gas and back on
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06-24-2018, 11:48 AM
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#7 |
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Not Yet Wild
Join Date: Jul 2009
Location: marion ohio
Posts: 71
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Re: 88 marathon no accerlation
not sure of history of the cart do know it had been sitting for quit a while when i got it last year I got a great deal on it bought the cart and a honda 4 wheeler for 250 dollars had to drag them both out of th guys back yard sold the 4 wheeler for 300 repaired the wiring on cart squirrels had chewed rep;aced carb and battery and it started and has been running good till yesterday do I need anything special to put new seals in it
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06-24-2018, 12:07 PM
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#8 |
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Not Yet Wild
Join Date: Jul 2009
Location: marion ohio
Posts: 71
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Re: 88 marathon no accerlation
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06-24-2018, 12:59 PM
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#9 |
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Gone Wild
Join Date: May 2014
Location: Ohio
Posts: 185
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Re: 88 marathon no accerlation
When you hit the gas after you let off and it backfires is probably because the carb is opening before the micro switch is opening. What I mean is when you have the cart off and hit the accelerator pedal you'll hear a click that is coming from the micro switch that's mounted to it. The switch has to open before you see any movement in the carb linkage. If the carb opens first then the switch you'll get a backfire and that will blow out your seals.
Find the switch, take the seat off and it'll be mounted to the front of the engine compartment. Push on the accelerator pedal and you'll hear it click. Now watch the linkage on the carb while pushing on the accelerator and listen for the click. If the carb is moving prior to the click then you need to adjust the switch so it turns on first. |
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06-24-2018, 04:06 PM
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#10 |
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Test before replacing
Join Date: Aug 2013
Location: Ohio side of the Pennsylvania border.
Posts: 3,496
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Re: 88 marathon no accerlation
You need the spring from be an ink pen slid over the end of the throttle cable. It will hold the carburetor closed until the microswitch clicks.
Backfiring like that will pop out the seals. |
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