83 EZ GO Marathon

jrohdy · 07-12-2011, 05:52 PM

Well, I did some work today on my cart, here is what I have done so far. First, I took the starter/generator to a local auto electric company to have it tested, everything good. so I went ahead and bought a new battery. Checked all my wires again and found the 2 for the accelerator switch, so I for now I just touched the 2 wires together and turned the engine over. While turning the engine over I checked to make sure I have spark,(spark was good) and checked compression, which was 135psi. So looking at the carb now. Hopefully tomorrow I can clean or get a different carb and get a accelerator switch ordered. thanks for everybody's help.

Dave Box · 07-12-2011, 06:18 PM

Those are good numbers. I hope it all works out
Dave

BrewCityMusic · 07-13-2011, 09:13 AM

This is a great diagram to assist with your carb cleaning - rarely do these 2-stroke carbs actually go "bad", chances are if you clean all the jets that I have circled (as well as the needle valve for the float, also circled) you should be back in business with your carb!

jrohdy · 07-13-2011, 10:43 PM

Hey thanks for the diagram BrewcityMusic, I just noticed when I started cleaning the carb, it was missing the jet on top. so instead of just looking for another jet, was wondering if anyone knows where to get a used carb or has one to sell please let me know. the engine is a Robin EC25-2PG.

BrewCityMusic · 07-13-2011, 11:37 PM

ouch .... You should (maybe) be able to order the jet from EZGO or a site sponsor, might be a better bet than $100-ish plus shipping for a new carb if you can't find a used one

(I'm at work but will look up the part number for you in the AM and post it - I would think if it's available it should be well under $10 - then again, I could be wrong, I atually priced Pulsars and Ignitors once *shiver* )

jrohdy · 07-14-2011, 06:47 PM

ok, went to a local ezgo dealer and got a new carb and accelerator micro switch. fired right up and took off, not for sure how fast they are to go but seemed like it ran good a old golf cart. I did run into one problem as I was running her around for awhile. Sometimes when I held it wide open it would die on me. shut the key off wait a couple minutes, and it would start right back up. I put a new plug in it, and the third time it did it and had my spark tester with, and it seem as if it had spark? or maybe not enough? and the brakes are froze up on it which for sitting I expected that, so if anyone as any suggestions please let me know. thanks

BrewCityMusic · 07-14-2011, 09:36 PM

I'm leaning towards sticky solenoid overheating or maybe a really gooed up muffler, what's your opinion Dave?

ScooterMcTavish · 07-14-2011, 09:45 PM

Mine threw blue smoke when the muffler heated up from running open. Really it bogged down on whenever it revved up due to the muffler being gooey, not just at full throttle.

Dave Box · 07-15-2011, 07:47 AM

I vote that it's time for a muffler BBQ. (and as my success rate is currently in the doldrums I also suggest a blocked fuel filter that cannot pass enough gas for wide open).

Anywho I like threads that include the words "got her running". Good job

Dave

BrewCityMusic · 07-15-2011, 08:43 AM

to explain the muffler concept, what happens with these 2-smokers is that over time, a large amount of uncombusted oil gets passed through the engine and ends up building up in the muffler, partially plugging the baffles - it's actually not uncommon for these mufflers to plug up entirely, in fact.

The easiest test is to open up the bolts that hold the muffler to the headpipe so that there is a 1/2" gap between the muffler and the pipe, then give her a drive (caution: your neighbors are gonna HATE you because it's very VERY loud) - if your performance increases, and the hot shutdown doesn't happen, then you need to search "muffler bbq" here on the threads and do it, the procedure burns out the majority of (if not all) the uncombusted goo in the muffler and restores a HUGE percentage of the original performance.

If bychance the test proves that the problem lies elsewhere, then we need to look at a couple of potential issues, likely a stuck solenoid that is overheating after a bit of running and shutting you down til it cools, possibly a faulty ignitor (however if you are still getting spark while it's in the "no-start" mode, those are less-likely candidates)

07-12-2011, 05:52 PM	#11
jrohdy Not Yet Wild Join Date: Jul 2011 Posts: 9	Re: 83 EZ GO Marathon Well, I did some work today on my cart, here is what I have done so far. First, I took the starter/generator to a local auto electric company to have it tested, everything good. so I went ahead and bought a new battery. Checked all my wires again and found the 2 for the accelerator switch, so I for now I just touched the 2 wires together and turned the engine over. While turning the engine over I checked to make sure I have spark,(spark was good) and checked compression, which was 135psi. So looking at the carb now. Hopefully tomorrow I can clean or get a different carb and get a accelerator switch ordered. thanks for everybody's help.
jrohdy Not Yet Wild Join Date: Jul 2011 Posts: 9

07-12-2011, 06:18 PM	#12
Dave Box Respect the Cart Join Date: May 2010 Location: Rocky Mount, Virginia Posts: 2,190	Re: 83 EZ GO Marathon Those are good numbers. I hope it all works out Dave

07-13-2011, 09:13 AM	#13
BrewCityMusic Hammer Down !!!! Join Date: Jun 2010 Location: Lake Geneva, WI Posts: 2,681	Re: 83 EZ GO Marathon This is a great diagram to assist with your carb cleaning - rarely do these 2-stroke carbs actually go "bad", chances are if you clean all the jets that I have circled (as well as the needle valve for the float, also circled) you should be back in business with your carb!

07-13-2011, 10:43 PM	#14
jrohdy Not Yet Wild Join Date: Jul 2011 Posts: 9	Re: 83 EZ GO Marathon Hey thanks for the diagram BrewcityMusic, I just noticed when I started cleaning the carb, it was missing the jet on top. so instead of just looking for another jet, was wondering if anyone knows where to get a used carb or has one to sell please let me know. the engine is a Robin EC25-2PG.
jrohdy Not Yet Wild Join Date: Jul 2011 Posts: 9

07-13-2011, 11:37 PM	#15
BrewCityMusic Hammer Down !!!! Join Date: Jun 2010 Location: Lake Geneva, WI Posts: 2,681	Re: 83 EZ GO Marathon ouch .... You should (maybe) be able to order the jet from EZGO or a site sponsor, might be a better bet than $100-ish plus shipping for a new carb if you can't find a used one (I'm at work but will look up the part number for you in the AM and post it - I would think if it's available it should be well under $10 - then again, I could be wrong, I atually priced Pulsars and Ignitors once shiver )

Today
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07-14-2011, 06:47 PM	#16
jrohdy Not Yet Wild Join Date: Jul 2011 Posts: 9	Re: 83 EZ GO Marathon ok, went to a local ezgo dealer and got a new carb and accelerator micro switch. fired right up and took off, not for sure how fast they are to go but seemed like it ran good a old golf cart. I did run into one problem as I was running her around for awhile. Sometimes when I held it wide open it would die on me. shut the key off wait a couple minutes, and it would start right back up. I put a new plug in it, and the third time it did it and had my spark tester with, and it seem as if it had spark? or maybe not enough? and the brakes are froze up on it which for sitting I expected that, so if anyone as any suggestions please let me know. thanks
jrohdy Not Yet Wild Join Date: Jul 2011 Posts: 9

07-14-2011, 09:36 PM	#17
BrewCityMusic Hammer Down !!!! Join Date: Jun 2010 Location: Lake Geneva, WI Posts: 2,681	Re: 83 EZ GO Marathon I'm leaning towards sticky solenoid overheating or maybe a really gooed up muffler, what's your opinion Dave?

07-14-2011, 09:45 PM	#18
ScooterMcTavish Gone Wild Join Date: Oct 2009 Location: Manitoba, Canada Posts: 363	Re: 83 EZ GO Marathon Mine threw blue smoke when the muffler heated up from running open. Really it bogged down on whenever it revved up due to the muffler being gooey, not just at full throttle.

07-15-2011, 07:47 AM	#19
Dave Box Respect the Cart Join Date: May 2010 Location: Rocky Mount, Virginia Posts: 2,190	Re: 83 EZ GO Marathon I vote that it's time for a muffler BBQ. (and as my success rate is currently in the doldrums I also suggest a blocked fuel filter that cannot pass enough gas for wide open). Anywho I like threads that include the words "got her running". Good job Dave

07-15-2011, 08:43 AM	#20
BrewCityMusic Hammer Down !!!! Join Date: Jun 2010 Location: Lake Geneva, WI Posts: 2,681	Re: 83 EZ GO Marathon to explain the muffler concept, what happens with these 2-smokers is that over time, a large amount of uncombusted oil gets passed through the engine and ends up building up in the muffler, partially plugging the baffles - it's actually not uncommon for these mufflers to plug up entirely, in fact. The easiest test is to open up the bolts that hold the muffler to the headpipe so that there is a 1/2" gap between the muffler and the pipe, then give her a drive (caution: your neighbors are gonna HATE you because it's very VERY loud) - if your performance increases, and the hot shutdown doesn't happen, then you need to search "muffler bbq" here on the threads and do it, the procedure burns out the majority of (if not all) the uncombusted goo in the muffler and restores a HUGE percentage of the original performance. If bychance the test proves that the problem lies elsewhere, then we need to look at a couple of potential issues, likely a stuck solenoid that is overheating after a bit of running and shutting you down til it cools, possibly a faulty ignitor (however if you are still getting spark while it's in the "no-start" mode, those are less-likely candidates)