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06-03-2019, 02:25 PM
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Not Yet Wild
Join Date: May 2019
Posts: 15
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1989 EZGO Marathon 3pg Troubleshooting
Long time listener, first time caller. I have a 1989 Ezgo Marathon, 3pg engine. The other day I was reversing up a minor grade hill and just completely lost acceleration & RPMs. I now have almost no "pull" in forward or reverse and I don't think the engine is actually firing...what little pull I do get (and I mean little) looks to just be from the starter. I ran through all the checks...new carb, new filters, checked flow in all fuel lines, good spark, compression at 120psi. I have new ignition coil on order and would probably go with a new ignitor if the coil proves no help. Just thought I would see if anyone had other items I should troubleshoot. I sure would appreciate any insight!
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06-03-2019, 03:01 PM
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#2 |
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Vintage tech
Join Date: Sep 2009
Location: South
Posts: 3,216
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Re: 1989 EZGO Marathon 3pg Troubleshooting
Take a video of how it is doing and upload to youtube. Then link it here
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06-03-2019, 09:49 PM
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#3 |
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Not Yet Wild
Join Date: May 2019
Posts: 15
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Re: 1989 EZGO Marathon 3pg Troubleshooting
youtu.be/c1EcbAAOvLs
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06-03-2019, 09:56 PM
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#4 |
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Gone Wild
 Join Date: Feb 2009
Location: Sanger, Ca.
Posts: 1,689
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Re: 1989 EZGO Marathon 3pg Troubleshooting
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06-04-2019, 07:49 AM
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#5 |
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Not Yet Wild
Join Date: May 2019
Posts: 15
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Re: 1989 EZGO Marathon 3pg Troubleshooting
Thanks MILLERTIME - Haven't been on the board long enough to post links!
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06-04-2019, 08:22 AM
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#6 |
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Test before replacing
Join Date: Aug 2013
Location: Ohio side of the Pennsylvania border.
Posts: 3,495
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Re: 1989 EZGO Marathon 3pg Troubleshooting
It was running a little, but I don't like that banging sound.
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06-04-2019, 10:45 AM
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#7 |
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Nincompoop Club Member
Join Date: Jun 2016
Location: Idaho
Posts: 1,178
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Re: 1989 EZGO Marathon 3pg Troubleshooting
It was trying to run, Sounds like it's getting spark. You say 120 lbs compression, I'd start with a fuel issue, pull the plug to see if it's wet or dry and go from there
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06-04-2019, 05:27 PM
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#8 |
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Not Yet Wild
Join Date: May 2019
Posts: 15
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Re: 1989 EZGO Marathon 3pg Troubleshooting
Its wet. Checked the fuel flow at each point in the fuel lines and everything says its getting fuel.
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06-04-2019, 07:08 PM
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#9 |
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Not Yet Wild
Join Date: May 2019
Posts: 15
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Re: 1989 EZGO Marathon 3pg Troubleshooting
Drive clutch is 1 year old, I’m feeling like it may be drive clutch or hub. ??
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06-04-2019, 07:50 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: 3,495
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Re: 1989 EZGO Marathon 3pg Troubleshooting
It's not the clutch. That engine isn't running right, and I hear a banging sound.
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