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Gas Yamaha Gas Yamaha Golf Cars; G1 through "The Drive" and U-Max Utility Vehicles |
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04-05-2012, 09:03 PM | #1 |
Not Yet Wild
Join Date: Dec 2011
Posts: 28
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G1 motor compression
what is the compression suppose to be? Mines around 95-100.
I ask because its lacking in power. Won't rev up and smokes a lot. Kind of like its pig rich. If I put it up on jackstands it rev's out nice and shift the clutches right out. Basically sounds perfect in the air. Where to start trouble shooting? Thanks |
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04-05-2012, 09:33 PM | #2 |
Gone Wild
Join Date: Oct 2010
Location: Pittsburgh Pa
Posts: 1,551
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Re: G1 motor compression
With a new top end you should have about 125 psi. If your cart is an 82 it would be lower...... somewhere around 95.
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04-05-2012, 09:39 PM | #3 |
Not Yet Wild
Join Date: Dec 2011
Posts: 28
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Re: G1 motor compression
Mine could be an 82. I can't find a serial number or figure out what year it is. Thanks
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04-09-2012, 07:09 PM | #4 | |
Getting Wild
Join Date: Feb 2012
Location: Ontario Canada
Posts: 106
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Re: G1 motor compression
Quote:
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04-10-2012, 06:52 PM | #5 |
Gone Wild
Join Date: Feb 2011
Location: Winnipeg, Manitoba
Posts: 177
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Re: G1 motor compression
As you said, "like it's pig rich", so make sure that is not the problem. Is the gas fresh? Oil mix is right? Check carb settings, go to the lean side and see if that makes it better. How is the spark? Check the plug and wires, make sure you observe a good spark. How is the air filter, try with it removed. Is the exhaust plugged? try with it off the engine. Investigate the crankshaft seals for leakage. If you haven't found something you could say for sure was the problem you will need to look into a rebuild.
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04-10-2012, 08:29 PM | #6 |
Getting Wild
Join Date: Feb 2012
Posts: 124
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Re: G1 motor compression
Well I'm no expert on golf carts but am refurbishing a G1. Yours sounds like mine did when I first purchased it used as used can be. I had to rebuild/clean engine and do a muffler BBQ to get rid of the stink/smoke. Also, like Caddylac said, I replaced the fuel lines, filter, gas and oil. Now runs well, no sputtering and no smoke or stink. The muffler BBQ is nearly a must with these old two cycles if you want to get rid of the smoke and stink. See posts on muffler BBQ. Lots of folks steered me in that direction and it worked well.
Bodzcampers (Mike) |
04-11-2012, 11:09 AM | #7 |
Not Yet Wild
Join Date: Dec 2011
Posts: 28
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Re: G1 motor compression
hey caddylac camper, I'm in Winnipeg too.
Thanks for the feedback guys. I took the air filter right off and it ran better. Cleaned it up and put it back on and now it seems to only run better when I have the choke on. So it went from too much fuel to too little fuel. Anyway, I'm going to try and clean the carb and change all the filters and lines like suggested and see what happens. Seems carb related more then engine related at this point. |
04-11-2012, 05:26 PM | #8 |
Gone Wild
Join Date: Feb 2011
Location: Winnipeg, Manitoba
Posts: 177
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Re: G1 motor compression
Nice to meet you Procomp, look for a serial number on the left rear of the frame. If you need help with anything shoot me a private message, I'm no cart expert but have extensive mechanical experience and will be happy to help out.
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04-11-2012, 11:38 PM | #9 |
Getting Wild
Join Date: Feb 2012
Posts: 124
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Re: G1 motor compression
Don't forget the muffler BBQ. Trust me, you'll be happy and it's easy.
Bodzcampers (Mike) |
04-12-2012, 02:21 PM | #10 | |
Not Yet Wild
Join Date: Dec 2011
Posts: 28
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Re: G1 motor compression
Quote:
Can anyone tell by the front spindle design? |
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