Need fuel pump schematic or picture

1970buick · 01-02-2015, 01:06 PM

I have a 1990 Ezgo and I pulled the fuel pump to check and it and labeled the inlet/outlets with the hoses and the sharpie came of while cleaning. Can anyone tell me what hoses go where? there are 3 hoses on mine

1989Marathon · 01-02-2015, 01:09 PM

The stock pump should have 2 hoses and a pulse hole in the back.
Isn't there an arrow cast into the body pointing at the outlet?

1970buick · 01-02-2015, 01:23 PM

there are arrows pointing all over the place. If it supposed to have 2 hoses and not three then I have a spare from a 2pg...could I use that? There is a hose from the gas tank (I will look for an in arrow) a hose to the carb (I assume out arrow) and then there is another one( I was thinking this might be a vacuum line that hooked to the crank case or something

1989Marathon · 01-02-2015, 01:29 PM

The third hole is the pulse line. A stock 2pg or 3pg pump gets mounted directly to the lower case and gets it's pulse through the back of the pump.
You said you pulled this off to check it so it must have been modified from stock.

1970buick · 01-02-2015, 01:42 PM

Yea, this one was mounted on the firewall beside the gas tank. Well, guess I will have to get pictures to explain

1989Marathon · 01-02-2015, 01:45 PM

No need to explain. I know what you have. Check for the arrows. In from tank, out to carb, the last one(usually in the middle) goes to the pulse line.

1970buick · 01-02-2015, 01:49 PM

Quote:

Originally Posted by 1989Marathon

No need to explain. I know what you have. Check for the arrows. In from tank, out to carb, the last one(usually in the middle) goes to the pulse line.

Where is the pulse line/hole located? Thanks

1989Marathon · 01-02-2015, 01:56 PM

The stock pulse hole is on the lower case at the back of the engine. Since you took the pump off, don't you have 3 hoses still in the cart?

1970buick · 01-02-2015, 02:06 PM

I don't think the 3rd line was hooked up when I picked this up. So if I am looking down at the engine from the back, it should be directly down in the middle? Would there be a fitting coming out? Sorry, cart is 10 minutes away and I want to know what to look for when I go back.

1989Marathon · 01-02-2015, 02:11 PM

No fitting, just a hole that the pump/spacer/gasket mounts to. Also an o-ring on the back of the pump.
Here is the stock location for the pump on a 3pg motor. Looking from the clutch side. Maybe someone installed a fitting in the hole there.

01-02-2015, 01:06 PM	#1
1970buick Gone Wild Join Date: Jul 2012 Location: maryland Posts: 818	Need fuel pump schematic or picture I have a 1990 Ezgo and I pulled the fuel pump to check and it and labeled the inlet/outlets with the hoses and the sharpie came of while cleaning. Can anyone tell me what hoses go where? there are 3 hoses on mine

01-02-2015, 01:09 PM	#2
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730	Re: Need fuel pump schematic or picture The stock pump should have 2 hoses and a pulse hole in the back. Isn't there an arrow cast into the body pointing at the outlet?
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730

01-02-2015, 01:23 PM	#3
1970buick Gone Wild Join Date: Jul 2012 Location: maryland Posts: 818	Re: Need fuel pump schematic or picture there are arrows pointing all over the place. If it supposed to have 2 hoses and not three then I have a spare from a 2pg...could I use that? There is a hose from the gas tank (I will look for an in arrow) a hose to the carb (I assume out arrow) and then there is another one( I was thinking this might be a vacuum line that hooked to the crank case or something

01-02-2015, 01:29 PM	#4
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730	Re: Need fuel pump schematic or picture The third hole is the pulse line. A stock 2pg or 3pg pump gets mounted directly to the lower case and gets it's pulse through the back of the pump. You said you pulled this off to check it so it must have been modified from stock.
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730

01-02-2015, 01:42 PM	#5
1970buick Gone Wild Join Date: Jul 2012 Location: maryland Posts: 818	Re: Need fuel pump schematic or picture Yea, this one was mounted on the firewall beside the gas tank. Well, guess I will have to get pictures to explain

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01-02-2015, 01:45 PM	#6
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730	Re: Need fuel pump schematic or picture No need to explain. I know what you have. Check for the arrows. In from tank, out to carb, the last one(usually in the middle) goes to the pulse line.
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730

01-02-2015, 01:56 PM	#8
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730	Re: Need fuel pump schematic or picture The stock pulse hole is on the lower case at the back of the engine. Since you took the pump off, don't you have 3 hoses still in the cart?
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730

01-02-2015, 02:06 PM	#9
1970buick Gone Wild Join Date: Jul 2012 Location: maryland Posts: 818	Re: Need fuel pump schematic or picture I don't think the 3rd line was hooked up when I picked this up. So if I am looking down at the engine from the back, it should be directly down in the middle? Would there be a fitting coming out? Sorry, cart is 10 minutes away and I want to know what to look for when I go back.

01-02-2015, 02:11 PM	#10
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730	Re: Need fuel pump schematic or picture No fitting, just a hole that the pump/spacer/gasket mounts to. Also an o-ring on the back of the pump. Here is the stock location for the pump on a 3pg motor. Looking from the clutch side. Maybe someone installed a fitting in the hole there.
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730

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