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JW in MO 
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Joined: 16 Feb 2010
Location: South KC Area
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 Topic: Yamaha gas golf cart help needed FIXED
Posted: 09 Mar 2020 at 7:45pm |
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Driving along and I thought it ran out of gas, nope, plenty of gas. Has spark, took fuel line off, fuel pump works while it cranks over, dip tube ok in tank. Now if I spray starting fluid in the carb it starts and runs as long as I hold the gas pedal down but if I let off, it dies. Pour gas down the carb and nothing. I can choke it, not choke it, whatever and nothing, give it a shot of ether and we're off to the races until I let off the pedal. I haven't taken the carb off yet, maybe a bad gasket, sucking air?
Edited by JW in MO - 15 Mar 2020 at 5:33pm
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allisrutledge
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Joined: 30 Mar 2010
Location: SurgoinsvilleTN
Points: 1357
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Posted: 09 Mar 2020 at 8:30pm |
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Did you change the plug? I know you got spark but I'd try a plug first
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Allis Chalmers still exist in my mind and barns
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allisbred
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Joined: 28 Mar 2015
Location: Hanover Pa
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Posted: 09 Mar 2020 at 8:52pm |
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I have changed the fuel pump on our Yamaha several times, the small screen gets dirt in it and must be clean. I’m taking it that the starter is whipping it over fast enough. Check the cable to the foot peddle as well. Most over my problems have been electrical over the years. If squirting ether in the pump screen works, replace the pump.
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allisrutledge
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Location: SurgoinsvilleTN
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Posted: 10 Mar 2020 at 9:36am |
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Also if the crank seals are bad there won't be enough vacuum to operate the pump at low rooms. Had this problem on a g2. Hope you find the problem
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Allis Chalmers still exist in my mind and barns
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allisrutledge
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Posted: 10 Mar 2020 at 9:36am |
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RPM,s
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Allis Chalmers still exist in my mind and barns
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JW in MO
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Joined: 16 Feb 2010
Location: South KC Area
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Posted: 10 Mar 2020 at 11:12am |
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I haven't changed the plug, the spark seemed hot and blue but it's probably time. I put a new pump on a couple years ago, wasn't the problem then but they aren't expensive. When I pull the hose off the carb, press the accelerator it pumps gas rather freely. I put the transmission in neutral, pull the air filter and just shoot a drop if ether in it and it starts and runs fine, that's the confusing part. Once it's running its fine until you stop. New plug and pump won't hurt anything so I'll start there.
Thanks guys, I'll keep trying and report back.
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allisbred
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Posted: 10 Mar 2020 at 12:08pm |
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Start with a good hot battery, sometimes just a little less, doesn’t make enough to whip starter fast enough. I have also adjusted the fuel line so it didn’t have to pump uphill. I pulled the carb once and replaced the gasket. There are several little things that have all eventually worked. Hope this helps
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Ted J
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Joined: 05 Jul 2010
Location: La Crosse, WI
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Posted: 10 Mar 2020 at 12:32pm |
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Yeah JW, I'd start with the fuel pump and then pull some hair out. I'm going to try that with mine. My problem is that it starts fine*, but as soon as you step on the accelerator it quits. *just push the pedal down far enough to turn it over and it runs in idle. Soon as I push harder......Pffftt
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"Allis-Express"
19?? WC / 1941 C / 1952 CA / 1956 WD45 / 1957 WD45 / 1958 D-17
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JW in MO
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Location: South KC Area
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Posted: 10 Mar 2020 at 8:10pm |
Went out tonight and started messing with it and the battery gave out, started to put a charger on it and then decided to go with a new one, headed to town tomorrow.
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Ted J
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Posted: 11 Mar 2020 at 8:16pm |
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Be careful pushing down on the accelerator on that truck.
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"Allis-Express"
19?? WC / 1941 C / 1952 CA / 1956 WD45 / 1957 WD45 / 1958 D-17
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JW in MO
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Posted: 12 Mar 2020 at 12:04pm |
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New battery alone didn't do it but now am convinced the fuel pump isn't working right, started looking online and found them for around $10-15, also found a rebuild kit for my old one for $35, who buys those?
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chaskaduo
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Joined: 26 Nov 2016
Location: Twin Cities
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Posted: 12 Mar 2020 at 4:48pm |
The guys that didn't find the $10-15 ones. 
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1938 B, 79 Dynamark 11/36 6spd, 95 Weed-Eater 16hp, 2010 Bolens 14hp
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JW in MO
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Posted: 12 Mar 2020 at 6:04pm |
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OK, I'd starve to death as a golf cart repairman, everything I thought it was, it wasn't. I took the carb off, (managed to loose a 1/4" drive socket that I really needed for an hour), but the float was not sticking. I did get it to start and run for a bit on its own today, used the original fuel pump, stuck the pump inlet hose in a can of gasoline. It ran for a bit, I let off the gas, it died and refused to start again. New fuel pump should be here Tuesday, I'll put the new plug in then and I'm thinking new hoses and dip tube.
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CTuckerNWIL
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Posted: 12 Mar 2020 at 7:44pm |
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JW, is this a 2 cycle engine? If so, you could have leaking seals on the crankshaft or a dirty or warped reed valve. Either one of these will let enough air leak by at low RPM's to cause problems.
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JW in MO
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Posted: 12 Mar 2020 at 9:24pm |
 CTuckerNWIL wrote:
JW, is this a 2 cycle engine? If so, you could have leaking seals on the crankshaft or a dirty or warped reed valve. Either one of these will let enough air leak by at low RPM's to cause problems.
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What makes me feel even dumber is, nope, it's 4 cycle. If it'd been 2 I would have already taken it somewhere. Bowl on carb is full of gasoline but I don't think it's getting replenished once it starts, so going to try the new pump with new tubing out of a can before I reconnect everything. Only other thought would be if the starter is dragging however I've always had to choke it to get it started so maybe a compression test is necessary. Of course, I'm overthinking everything at this point.
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mhankins
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Joined: 19 Feb 2019
Location: Arkansas
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Posted: 13 Mar 2020 at 9:49am |
If it is an overhead valve engine,I would check the valve clearances. Maybe do an engine leak down test,it will tell you more than a compression check will.
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allisbred
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Posted: 13 Mar 2020 at 10:19am |
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I wouldn’t get into the engine just yet. I have a ‘96 that gets used regular and have never been in there. I always start electrical, then fuel. You will get it and most likely just something small. I have worked on several of these over the years, engines last if the oil and air filters are maintained. You can tell that by the amount of oil that is burned!
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JW in MO
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Posted: 15 Mar 2020 at 5:37pm |
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Cleaned the carburetor for the third time only when I took it off I found the gasket lying on the floor so I mad sure I put it back on this time, replaced the spark plug and it runs like a turpentined cat. Think I'll give it a fresh oil change and wait for all the activities to fire back up.
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