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05-14-2009, 11:32 PM | #1 |
Not Yet Wild
Join Date: May 2009
Location: Redland, aka - Oklahoma
Posts: 42
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G2A knocking noise
Hi,
I'm a new owner of a 91 G2A. The cart ran smooth and has a lot of power, till about two weeks ago when it started making this knocking noise about 30 seconds from starting it. Sometimes, it comes to a rough stop when I try to slow down. I pulled the carb, soaked it overnight, clean it, then put it back. Changed the air filter but the noise is still there... maybe a bit worse. Anyone thoughts what might be causing this? Thanks!!! my first posting.... Awesome forum. Glad to join you'all. |
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05-14-2009, 11:59 PM | #2 |
Gone Wild
Join Date: Feb 2009
Location: P-COLA
Posts: 1,176
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Re: G2A knocking noise
Howdy be... Check your driven clutch ( the one on the trans. )
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05-15-2009, 12:51 AM | #3 |
Not Yet Wild
Join Date: May 2009
Location: Redland, aka - Oklahoma
Posts: 42
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Re: G2A knocking noise
thank you for the prompt reply...
It could be the clutch, but the knocking noise is there even when the clutch belt was removed.. Would the clutch still cause the noise even then? It almost sound like the engine valves, but normally the valves normally have steady continuous sound.. this noise is somehow irregular Not sure here, but I think that the problem might have been triggered by filling up the tank by with 5 month old gas. I since drained the gas tank (cleaned the carb) and replaced it with fresh gas. I'm handy with small engines. I work on my bike when needed, but totally new to golf carts... any assistance is greatly appreciated. |
05-15-2009, 07:02 AM | #4 |
Admin/Moderator
Join Date: Dec 2006
Location: Ohio
Posts: 18,010
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Re: G2A knocking noise
Make sure there is 1 quart of oil in the engine, some dip sticks were mis-marked. I think I would remove the valve cover and inspect the rockers. Set valves at .004" at TDC cold.
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Ron
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05-15-2009, 03:22 PM | #5 |
Sometime's............
Join Date: Oct 2007
Location: Tacoma Washington
Posts: 11,868
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Re: G2A knocking noise
You may want to take the primary clutch cap off and inspect the three weights. Later Dave
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05-15-2009, 07:37 PM | #6 |
Admin
Join Date: Dec 2006
Location: TN
Posts: 101,826
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Re: G2A knocking noise
Welcome to the BGW. Can you tell if the knocking is coming from the engine area or axle area? If from the engine area, I agree with smallblock, check your drive clutch. Pull the cover and make sure nothing is broken and if not, spread a little grease on all moving parts. Be careful when removing the screws holding on the clutch cover. They may be seized and you don't won't to strip them. WD-40 and use a good screwdriver and tap the screwdriver a couple of times if they are seized. I have also used a screw driver bit in a 1/4 socket with a 1/4 inch drive ratchet before. The best thing for seized screws is one of the drivers you tap with a hammer and it twists as you hit it. I think you can pick these up at a parts store.
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05-15-2009, 08:35 PM | #7 |
Gone Wild
Join Date: Sep 2007
Location: maine
Posts: 3,352
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Re: G2A knocking noise
check your drive clutch expesially the bushing were it slides. try to shake clutch a little to see if there is any play. if there is the bushing is bad. it will cause a rattling noise.
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05-15-2009, 08:37 PM | #8 |
doin it in the desert
Join Date: Dec 2008
Location: Sonora Desert,Az
Posts: 5,603
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Re: G2A knocking noise
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05-15-2009, 11:17 PM | #9 |
Not Yet Wild
Join Date: May 2009
Location: Redland, aka - Oklahoma
Posts: 42
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Re: G2A knocking noise
The noise is definitely coming from the engine.
The knocking sound is still there even after I removed the drive belt and ran the engine... (this is a silly question to most of you) could the drive clutch still be the culprit even if the drive belt is taking off and trans is neutral? |
05-15-2009, 11:18 PM | #10 |
Not Yet Wild
Join Date: May 2009
Location: Redland, aka - Oklahoma
Posts: 42
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Re: G2A knocking noise
another silly question, which is the drive clutch? the service manual refers to transmission but no mention of drive clutch... thanks
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Tags |
g2a, knocking, noise, yamaha |
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