wants to run but wont

cpotter · 06-09-2013, 09:05 PM

I have a mid 80s ezgo with a 2pg motor. I just rebuilt the motor from crank up. i took it on its first trip and it ran great. after a while it started chugging. Got it home and seen choke came unhooked and was on. hooked it back up it ran great for about 20 feet and then it made a bang and killed and wouldnt start backup. since then ive checked/cleaned carb and checked reeds. I checked my coil and replaced it with one my buddy had off his. it has bright blue spark. Still has great compression. when cranking it pops but wont start. Every once in a while it would run but once u let off throttle it wont start again. we put gas straight into cylinder through spark plug hole replaced plug and it wont even pop changed plug removed fuel pump a blew through it with mouth and it dont seem to leak. It acts the same way in forward and reverse so dont think its timing. Only thing i can think of is spark is bad under compression. i dont want to start throwing parts at it. i am stumped any help would be appreciate. thanks chris

1989Marathon · 06-09-2013, 09:09 PM

Was the bang a backfire or did it sound like something breaking internally?
If it was a backfire, it probably took out one or both of the crank seals.
Look behind the primary clutch and you might even see it sitting on the crankshaft. If it is still in the block, look for any leakage around the seal.

cpotter · 06-09-2013, 09:49 PM

It didnt sound like a backfire to me. when the reeds were out i turned motor over by hand and looked at crank and everything looked ok from what i could see and motor sounds fine when cranking. I will check the seals tomorrow when i get a chance. Is there a chance it might have only blown one out and i should pull the fan side apart too?

1989Marathon · 06-09-2013, 09:51 PM

Once one is blown out, it relieves pressure. 2 going at the same time is possible but unlikely.
If it didn't sound like a backfire, what did it sound like?

cpotter · 06-09-2013, 10:17 PM

I think of a backfire like out of the exhaust or carb a loud bang and this was more of a muffeled bang so it ptobably did backfire in the case. i will check it tomorrow. thank u for the help its greatly appreciated!

1989Marathon · 06-20-2013, 06:17 PM

What did you find to be the problem?

06-09-2013, 09:05 PM	#1
cpotter Not Yet Wild Join Date: Jun 2013 Posts: 7	wants to run but wont I have a mid 80s ezgo with a 2pg motor. I just rebuilt the motor from crank up. i took it on its first trip and it ran great. after a while it started chugging. Got it home and seen choke came unhooked and was on. hooked it back up it ran great for about 20 feet and then it made a bang and killed and wouldnt start backup. since then ive checked/cleaned carb and checked reeds. I checked my coil and replaced it with one my buddy had off his. it has bright blue spark. Still has great compression. when cranking it pops but wont start. Every once in a while it would run but once u let off throttle it wont start again. we put gas straight into cylinder through spark plug hole replaced plug and it wont even pop changed plug removed fuel pump a blew through it with mouth and it dont seem to leak. It acts the same way in forward and reverse so dont think its timing. Only thing i can think of is spark is bad under compression. i dont want to start throwing parts at it. i am stumped any help would be appreciate. thanks chris
cpotter Not Yet Wild Join Date: Jun 2013 Posts: 7

06-09-2013, 09:09 PM	#2
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730	Re: wants to run but wont Was the bang a backfire or did it sound like something breaking internally? If it was a backfire, it probably took out one or both of the crank seals. Look behind the primary clutch and you might even see it sitting on the crankshaft. If it is still in the block, look for any leakage around the seal.
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730

06-09-2013, 09:49 PM	#3
cpotter Not Yet Wild Join Date: Jun 2013 Posts: 7	Re: wants to run but wont It didnt sound like a backfire to me. when the reeds were out i turned motor over by hand and looked at crank and everything looked ok from what i could see and motor sounds fine when cranking. I will check the seals tomorrow when i get a chance. Is there a chance it might have only blown one out and i should pull the fan side apart too?
cpotter Not Yet Wild Join Date: Jun 2013 Posts: 7

06-09-2013, 09:51 PM	#4
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730	Re: wants to run but wont Once one is blown out, it relieves pressure. 2 going at the same time is possible but unlikely. If it didn't sound like a backfire, what did it sound like?
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730

06-09-2013, 10:17 PM	#5
cpotter Not Yet Wild Join Date: Jun 2013 Posts: 7	Re: wants to run but wont I think of a backfire like out of the exhaust or carb a loud bang and this was more of a muffeled bang so it ptobably did backfire in the case. i will check it tomorrow. thank u for the help its greatly appreciated!
cpotter Not Yet Wild Join Date: Jun 2013 Posts: 7

Today
BGW	Sponsored Links __________________ This advertising will not be shown in this way to registered members. Register your free account today and become a member on Buggies Gone Wild Golf Cart Forum

06-20-2013, 06:17 PM	#6
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730	Re: wants to run but wont What did you find to be the problem?
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730

Similar Threads
Thread	Forum
Ex-go wont go.....	Electric EZGO
G19 wont run	Electric Yamaha
Wont run getting gas in oil!	Gas EZGO
wONT DO ANYTHING	Electric Club Car
Wont turn left and now wont turn right	Electric EZGO