1984 fuel pump issue ??

dragracer5344 · 06-21-2011, 10:54 AM

Hello all,

I have an issue with my cart that started last summer and I am just getting around to checking it out. My cart has ran fine until it fouled a plug, then the fuel just overflowed all over the ground. It also filled up the air cleaner. I discovered a tear in the fuel pump diaphram, so I got a new pump and it still would not fire. It has always started right up even after sitting over winter, but I cannot get it to fire. I have spark, compression and have sprayed starting fluid but still no pop. If anyone has any suggestions, it would be greatly appreciated. Thanks Dave

shadowman · 06-21-2011, 10:56 AM

welcome to BGW.....have you taken the fuel line off at the carb to see if its pumping to the carb? if so its in the carb somewhere.....................

dragracer5344 · 06-21-2011, 11:04 AM

Thanks Tom, yes I have checked the fuel to the carb, I even bypassed the stock pump and installed a new electric pump last night that really puts out. I have not disassembled the carb yet, but cannot get it to fire by spraying fluid into spark plug hole or the carb intake. I will pull carb of today and check it out......thanks again

dragracer5344 · 06-21-2011, 11:44 AM

here are a few pics from last 4th of July. My grandson is showing his buddies how to work some of the bells and whistles....

ScooterMcTavish · 06-21-2011, 02:09 PM

Wow, that sounds a bit frustrating! Welcome here BTW!

If the cart isn't even popping with starter fluid, I'm thinking there has to still be a compression or spark issue somewhere. I'd lean towards spark, as I got mine to pop, even with a shot piston.

BrewCityMusic · 06-21-2011, 02:55 PM

First, drop all this talk of "Starter Fluid" or I'm getting the beating stick :)

Sounds like crank seals - if the crankcase got full of fuel (which sounds likely) the added pressure when you first cranked it over probably blew a seal (or both) ... You'll still have spark and compression at the cylinder, just nonoe in the crankcase to move the air and fuel where they need to be to run.

Dave Box · 06-21-2011, 03:36 PM

Brew City Music, right on the money. That is exactly what happened to me. If you are lucky it blew out the rear seal and you can see it flapping around on the crankshaft behind the clutch. In any case you should probably replace them both.

Dave

dragracer5344 · 06-21-2011, 04:47 PM

Thanks for the answers guy's...I have spark that shoots about an 1 1/2 inches, I rebulit the engine years ago and am aware of crank seals as I blew them out shooting nitrous to it...i.e. the reason for the rebulid as I torched the piston...I can see thee rear is in may take a look at the front tonight...thanks again Dave

BrewCityMusic · 06-21-2011, 06:41 PM

I freak out at the mere mention of starting fluid and this guy jumps right into a sordid tale of Nitrous Oxide ....

Something tells me you're gonna fit in just FINE around here, Drag !!!

Dave Box · 06-21-2011, 08:49 PM

The very thought of it turns my bowels to water.

06-21-2011, 10:54 AM	#1
dragracer5344 Not Yet Wild Join Date: Jun 2011 Location: Conifer,Co Posts: 15	1984 fuel pump issue ?? Hello all, I have an issue with my cart that started last summer and I am just getting around to checking it out. My cart has ran fine until it fouled a plug, then the fuel just overflowed all over the ground. It also filled up the air cleaner. I discovered a tear in the fuel pump diaphram, so I got a new pump and it still would not fire. It has always started right up even after sitting over winter, but I cannot get it to fire. I have spark, compression and have sprayed starting fluid but still no pop. If anyone has any suggestions, it would be greatly appreciated. Thanks Dave

06-21-2011, 10:56 AM	#2
shadowman The Last Moja Morani Join Date: Jan 2007 Location: jumping from cart to cart Posts: 8,975	Re: 1984 fuel pump issue ?? welcome to BGW.....have you taken the fuel line off at the carb to see if its pumping to the carb? if so its in the carb somewhere.....................

06-21-2011, 11:04 AM	#3
dragracer5344 Not Yet Wild Join Date: Jun 2011 Location: Conifer,Co Posts: 15	Re: 1984 fuel pump issue ?? Thanks Tom, yes I have checked the fuel to the carb, I even bypassed the stock pump and installed a new electric pump last night that really puts out. I have not disassembled the carb yet, but cannot get it to fire by spraying fluid into spark plug hole or the carb intake. I will pull carb of today and check it out......thanks again

06-21-2011, 02:09 PM	#5
ScooterMcTavish Gone Wild Join Date: Oct 2009 Location: Manitoba, Canada Posts: 363	Re: 1984 fuel pump issue ?? Wow, that sounds a bit frustrating! Welcome here BTW! If the cart isn't even popping with starter fluid, I'm thinking there has to still be a compression or spark issue somewhere. I'd lean towards spark, as I got mine to pop, even with a shot piston.

06-21-2011, 02:55 PM	#6
BrewCityMusic Hammer Down !!!! Join Date: Jun 2010 Location: Lake Geneva, WI Posts: 2,681	Re: 1984 fuel pump issue ?? First, drop all this talk of "Starter Fluid" or I'm getting the beating stick :) Sounds like crank seals - if the crankcase got full of fuel (which sounds likely) the added pressure when you first cranked it over probably blew a seal (or both) ... You'll still have spark and compression at the cylinder, just nonoe in the crankcase to move the air and fuel where they need to be to run.

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06-21-2011, 03:36 PM	#7
Dave Box Respect the Cart Join Date: May 2010 Location: Rocky Mount, Virginia Posts: 2,190	Re: 1984 fuel pump issue ?? Brew City Music, right on the money. That is exactly what happened to me. If you are lucky it blew out the rear seal and you can see it flapping around on the crankshaft behind the clutch. In any case you should probably replace them both. Dave

06-21-2011, 04:47 PM	#8
dragracer5344 Not Yet Wild Join Date: Jun 2011 Location: Conifer,Co Posts: 15	Re: 1984 fuel pump issue ?? Thanks for the answers guy's...I have spark that shoots about an 1 1/2 inches, I rebulit the engine years ago and am aware of crank seals as I blew them out shooting nitrous to it...i.e. the reason for the rebulid as I torched the piston...I can see thee rear is in may take a look at the front tonight...thanks again Dave

06-21-2011, 06:41 PM	#9
BrewCityMusic Hammer Down !!!! Join Date: Jun 2010 Location: Lake Geneva, WI Posts: 2,681	Re: 1984 fuel pump issue ?? I freak out at the mere mention of starting fluid and this guy jumps right into a sordid tale of Nitrous Oxide .... Something tells me you're gonna fit in just FINE around here, Drag !!!

06-21-2011, 08:49 PM	#10
Dave Box Respect the Cart Join Date: May 2010 Location: Rocky Mount, Virginia Posts: 2,190	Re: 1984 fuel pump issue ?? The very thought of it turns my bowels to water.

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