Early gas g2. Once warm, runs very poorly at higher rpm

MartyMar31 · 08-10-2013, 11:59 PM

I just got my cart running again for the first time in 4 years and its running a lot worse than it used to. It got parked because of the starter generator. Other than that it used to run fine. Now it sputters and cuts out after running for less than a min. (First 30 seconds or so it runs strong) I'm guessing these sputtering problems are happening because the motor is warm. I put on an electric fuel pump that puts out about 2.5psi. New fuel filter, air filter. New ignition coil to the plug. New plug. New voltage regulator. New carburetor, carb spacer. I found a broken wire going to the ignition box and fixed that too. Anybody have any other ideas? Ignition box bad? I hope not, I can't find one for less than $300

cgtech · 08-11-2013, 12:57 AM

sounds like ignitor (black ignition box). best thing to do is borrow one to test, but im sure you would have tried that. you used proper yamaha parts or equivalent right? also, i think Nivel sells one for $200, still not cheap.

Mike Mac · 08-11-2013, 08:43 AM

Stop spending money, and clean the carburetor, fuel filter etc.

smallblock450sl · 08-11-2013, 09:54 AM

Might try a "dynamic spark tester", then you can see if your loosing spark and causing your problem. Could be a bad ground or faulty wireharness or the Ignitor.

MartyMar31 · 08-11-2013, 10:14 AM

Thanks for the nivel idea. I drained all the old gas out and put on a new fuel filter, the electric fuel pump came with an inline filter, and the carb is brand new. The part that confuses me is that it runs well until warm and after that it'll barely go down the street.

MartyMar31 · 08-11-2013, 10:46 AM

I can't find an ignitor on nivel for a g2. Only g8 g14 g18 g22

cgtech · 08-11-2013, 03:35 PM

golf-cart-parts-now . com has in stock $200

simple man · 08-11-2013, 07:03 PM

Are you sure your choke plate is fully open when it is pushed in? If not, the cart will flood when it heats up.

08-10-2013, 11:59 PM	#1
MartyMar31 Not Yet Wild Join Date: Aug 2013 Posts: 3	Early gas g2. Once warm, runs very poorly at higher rpm I just got my cart running again for the first time in 4 years and its running a lot worse than it used to. It got parked because of the starter generator. Other than that it used to run fine. Now it sputters and cuts out after running for less than a min. (First 30 seconds or so it runs strong) I'm guessing these sputtering problems are happening because the motor is warm. I put on an electric fuel pump that puts out about 2.5psi. New fuel filter, air filter. New ignition coil to the plug. New plug. New voltage regulator. New carburetor, carb spacer. I found a broken wire going to the ignition box and fixed that too. Anybody have any other ideas? Ignition box bad? I hope not, I can't find one for less than $300
MartyMar31 Not Yet Wild Join Date: Aug 2013 Posts: 3

08-11-2013, 12:57 AM	#2
cgtech Over This Interview Is... Join Date: Jun 2012 Location: AZ Posts: 17,449	Re: Early gas g2. Once warm, runs very poorly at higher rpm sounds like ignitor (black ignition box). best thing to do is borrow one to test, but im sure you would have tried that. you used proper yamaha parts or equivalent right? also, i think Nivel sells one for $200, still not cheap.

08-11-2013, 08:43 AM	#3
Mike Mac G8 Specialist Join Date: Jun 2009 Location: Phoenix Posts: 7,799	Re: Early gas g2. Once warm, runs very poorly at higher rpm Stop spending money, and clean the carburetor, fuel filter etc.

08-11-2013, 09:54 AM	#4
smallblock450sl Sometime's............ Join Date: Oct 2007 Location: Tacoma Washington Posts: 11,874	Re: Early gas g2. Once warm, runs very poorly at higher rpm Might try a "dynamic spark tester", then you can see if your loosing spark and causing your problem. Could be a bad ground or faulty wireharness or the Ignitor.

08-11-2013, 10:14 AM	#5
MartyMar31 Not Yet Wild Join Date: Aug 2013 Posts: 3	Re: Early gas g2. Once warm, runs very poorly at higher rpm Thanks for the nivel idea. I drained all the old gas out and put on a new fuel filter, the electric fuel pump came with an inline filter, and the carb is brand new. The part that confuses me is that it runs well until warm and after that it'll barely go down the street.
MartyMar31 Not Yet Wild Join Date: Aug 2013 Posts: 3

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08-11-2013, 10:46 AM	#6
MartyMar31 Not Yet Wild Join Date: Aug 2013 Posts: 3	Re: Early gas g2. Once warm, runs very poorly at higher rpm I can't find an ignitor on nivel for a g2. Only g8 g14 g18 g22
MartyMar31 Not Yet Wild Join Date: Aug 2013 Posts: 3

08-11-2013, 03:35 PM	#7
cgtech Over This Interview Is... Join Date: Jun 2012 Location: AZ Posts: 17,449	Re: Early gas g2. Once warm, runs very poorly at higher rpm golf-cart-parts-now . com has in stock $200

08-11-2013, 07:03 PM	#8
simple man Gone Wild Join Date: Aug 2011 Location: Bunnell, Florida Posts: 2,408	Re: Early gas g2. Once warm, runs very poorly at higher rpm Are you sure your choke plate is fully open when it is pushed in? If not, the cart will flood when it heats up.

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