84 marathon power issues

Duman25 · 07-31-2018, 01:37 PM

I’ve got an 84 marathon I picked up from a guy I cut grass for. Finally got all the wiring situated and did the HEI conversion and got it running great. However it just had no pulling power what so ever. Reading the forums on here I’ve replaced the crankshaft seals. Put a hp3004 belt on it and still no power. Has 125 pounds of compression both ways. It backfires when it gets to high rpms and will not pull. Does pull better in reverse. Help please!

trig123 · 07-31-2018, 10:58 PM

Driven clutch could cause the low power pulling but not sure about the backfiring. Got a new plug installed ? and checked the wire ? I have had a few of these things with plugged up mufflers Mixing the oil and no oil injection I assume ?

cart around · 07-31-2018, 11:13 PM

You could also try switching the red and blue pulsar wires.

Duman25 · 08-01-2018, 03:52 AM

Brand new plug installed and yes mixing the oil and gas. I’ll try swapping the pulsed wires this evening!

Duman25 · 08-02-2018, 07:36 PM

Finally got a chance to look at the cart today and big thanks to cart around! Switching the wires worked perfect. Reba up higher and doesn’t backfire. Finally got some power and was able to ride it down the road! Big thanks to everyone’s input!

07-31-2018, 01:37 PM	#1
Duman25 Not Yet Wild Join Date: Jul 2018 Posts: 3	84 marathon power issues I’ve got an 84 marathon I picked up from a guy I cut grass for. Finally got all the wiring situated and did the HEI conversion and got it running great. However it just had no pulling power what so ever. Reading the forums on here I’ve replaced the crankshaft seals. Put a hp3004 belt on it and still no power. Has 125 pounds of compression both ways. It backfires when it gets to high rpms and will not pull. Does pull better in reverse. Help please!
Duman25 Not Yet Wild Join Date: Jul 2018 Posts: 3

07-31-2018, 10:58 PM	#2
trig123 Vintage tech Join Date: Sep 2009 Location: South Posts: 3,216	Re: 84 marathon power issues Driven clutch could cause the low power pulling but not sure about the backfiring. Got a new plug installed ? and checked the wire ? I have had a few of these things with plugged up mufflers Mixing the oil and no oil injection I assume ?

07-31-2018, 11:13 PM	#3
cart around Test before replacing Join Date: Aug 2013 Location: Ohio side of the Pennsylvania border. Posts: 3,496	Re: 84 marathon power issues You could also try switching the red and blue pulsar wires.

08-01-2018, 03:52 AM	#4
Duman25 Not Yet Wild Join Date: Jul 2018 Posts: 3	Re: 84 marathon power issues Brand new plug installed and yes mixing the oil and gas. I’ll try swapping the pulsed wires this evening!
Duman25 Not Yet Wild Join Date: Jul 2018 Posts: 3

08-02-2018, 07:36 PM	#5
Duman25 Not Yet Wild Join Date: Jul 2018 Posts: 3	Re: 84 marathon power issues Finally got a chance to look at the cart today and big thanks to cart around! Switching the wires worked perfect. Reba up higher and doesn’t backfire. Finally got some power and was able to ride it down the road! Big thanks to everyone’s input!
Duman25 Not Yet Wild Join Date: Jul 2018 Posts: 3

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

Similar Threads
Thread	Forum
Par Car power issues	Columbia ParCar
power issues	Electric golf carts
Power issues	Electric Club Car
power issues	Gas Yamaha
94 EZ GO Marathon 36V / Power issues	Electric EZGO