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Gas Yamaha Gas Yamaha Golf Cars; G1 through "The Drive" and U-Max Utility Vehicles |
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08-02-2018, 01:57 PM | #1 |
Not Yet Wild
Join Date: Nov 2017
Location: The People's Republic of California
Posts: 37
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G1 Runs Very Rough
Hello I have a 1979 Yamaha G1 cart. Same one from the “Reverse” Thread. The last major task from the refurb project was the brake pads. I put some Yamaha pads on yesterday. Sadly It runs very rough. I’m not sure where to start, as this is outside my wheelhouse.
Attached is a YouTube video of the maiden trip. It wouldn’t run unless the choke cable was pulled out. There is a very short pedal travel between full speed and complete stop. Also the governor has been removed. Many thanks Luke https://www.youtube.com/watch?v=Osfv-SiI1mI |
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08-02-2018, 02:32 PM | #2 |
Gone Wild
Join Date: Oct 2017
Location: Harrisburg, PA
Posts: 380
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G1 Runs Very Rough
You may blow it up quickly without a governor...just sayin.
Also, the governor gives you more pedal travel vs. the movement range of the throttle plate Sent from my iPhone using Tapatalk |
08-02-2018, 03:07 PM | #3 | |
Gone Wild
Join Date: Jan 2017
Location: venice
Posts: 1,807
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Re: G1 Runs Very Rough
Quote:
If your having to choke it a lot its more than likely crank seals |
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08-02-2018, 04:42 PM | #4 |
Not Yet Wild
Join Date: Nov 2017
Location: The People's Republic of California
Posts: 37
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Re: G1 Runs Very Rough
Thanks
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08-02-2018, 04:43 PM | #5 |
Not Yet Wild
Join Date: Nov 2017
Location: The People's Republic of California
Posts: 37
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Re: G1 Runs Very Rough
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08-02-2018, 04:47 PM | #6 |
Gone Wild
Join Date: Oct 2017
Location: Harrisburg, PA
Posts: 380
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Re: G1 Runs Very Rough
I'm sorry to hear that. If the throttle cable is connected directly to the carb then that will cause you to have a short range of motion in the pedal and also it will be very weird when starting like you noticed.
On mine, it needs choked about half until it warms up, or if it's after the first couple starts, you can just mash the gas then back off after it fires. It's weird too but not as undriveable as yours. Sent from my iPhone using Tapatalk |
08-02-2018, 05:21 PM | #7 |
Gone Wild
Join Date: Jan 2017
Location: venice
Posts: 1,807
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Re: G1 Runs Very Rough
These engines are based on the snow sled enticer/bravo250 and ive heard tell that they don't mind the high rpm's. That said id have oil injection deleted and the fuel premixed at 50:1 but that's just me.
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08-09-2018, 09:02 PM | #8 |
Gone Wild
Join Date: Aug 2018
Location: Down under
Posts: 180
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Re: G1 Runs Very Rough
so did you fix it ?...What was the problem?
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08-16-2018, 10:52 AM | #9 |
Not Yet Wild
Join Date: Nov 2017
Location: The People's Republic of California
Posts: 37
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Re: G1 Runs Very Rough
I had a cart service man out to see if he could see what's what. We did find a broken oil pump so I'll abandon it and move to pre-mixing fuel. Next I called Don Plowman (I purchased a muffler from Don) to see if he'd take a look at the video. ....That took everything in a hole different direction.
The fact that the cart constantly backs out a gear then snaps in and chirps the tires means the clutch is gone. At lease according to Don. He makes and sells clutches So I bought one. If left they way it is it can snap the axel and that's big money plus the clutch to boot. https://www.youtube.com/watch?v=Osfv-SiI1mI https://www.youtube.com/watch?v=vowU-Bf0I44 http://www.plowmanscarts.com/parts_g_1.html Last edited by LBH; 08-16-2018 at 10:58 AM.. Reason: Add Links |
08-16-2018, 08:21 PM | #10 |
Getting Wild
Join Date: Aug 2018
Posts: 146
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Re: G1 Runs Very Rough
Have you run a compression test?
P.S. always start with a compression test |
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