I m sure I will get advise to put this thing back to the original setup. And that s probably what I should do. BUT, it s already been converted to a rubber fuel line direct from tank to carb, bypassing the mechanical lift pump. I m thinking it needs a pump. I have a little in line electric pump that says it pushes 2.5-4 psi and was thinking of trying it. Does anyone know how many psi the original mechanical pump pushed?
- Thread starter apotheden
- Start date
Steve@Advance
Well-known Member
That's probably about what it ran.
Where people get in trouble is using a racing pump or a pump designed for fuel injection. Either of those will overwhelm a carburetor.
You should be OK as long as you make sure the pump never gets left on with the engine not running and turn
off the gas valve when done.
Any time I disturb a fuel line, I like to flush the line before making the final connection to the carb.
Where people get in trouble is using a racing pump or a pump designed for fuel injection. Either of those will overwhelm a carburetor.
You should be OK as long as you make sure the pump never gets left on with the engine not running and turn
off the gas valve when done.
Any time I disturb a fuel line, I like to flush the line before making the final connection to the carb.
Hobo,NC
Well-known Member
- Location
- Sanford, NC
Universal Electric pumps do a poor job of sucking fuel they are meant to be feed fuel (gravity flow) are submerged in fuel. You will suffer the same effect of fuel starvation as if you had no fuel pump (gravity flow) when the fuel gets low. All may be good till the fuel gets low and it sets a few days then the fuel returns back to the tank and the electric pump will not prime. To get the pump to prime you would need to add fuel till the fuel level gets well above the electric pump.
A mechanical fuel pump are as I call them a trash pump sucks fuel so they are self priming. If you install an electric pump put it WELL below the fuel supply outlet so it has a fuel supply that's gravity flow. Are its forced feed as long as it has fuel in the tank.
There are other ways to get around this issue they will still bite you. None are fail safe. This is why boats have a primer ball.
Harry in Ky
Member
- Location
- Central Kentucky
I don't know what pumps you're using. I've installed dozens of the low pressure electric pumps and have never had a problem with them lifting fuel three feet
or more. Requiring it be placed below fuel level is nonsense.
or more. Requiring it be placed below fuel level is nonsense.
Indiana Ken
Well-known Member
The fuel filter should go after the pump, the tank should have some sort of screen to prevent debris from entering the pump. So, screen in tank, pump, filter,
carb. The pump will be much happier pumping through the filter than pulling through it. It is good practice to keep the suction line (from tank to pump
inlet) away from heat sources.
carb. The pump will be much happier pumping through the filter than pulling through it. It is good practice to keep the suction line (from tank to pump
inlet) away from heat sources.
Hobo,NC
Well-known Member
- Location
- Sanford, NC
You have been a lucky man are used pumps made to pull fuel.
Fully Primed: Not All Electric Fuel Pumps Are Created Equal
https://www.onallcylinders.com/2022...ot-all-electric-fuel-pumps-are-created-equal/
Personally I would not go there on a tractor by the time and money spent to get a nice pump you could repair the original system to last another 50 years and not suffer from the effects of a damaged electric pump.
Most all OEM applications have some kind of fail safe to shut the pump off. No way it would leave my shop unless it did!!! More time more money more headaches.
Electric pumps like good clean fuel they are not trash pumps if his tank is not Palestine filters are not its going to be a headache.
Destroked 450
Well-known Member
- Location
- Harned, Ky
All Ford gas engines after 1964 had mechanical fuel pumps due to the carburetor Ceylon inlet being higher than the bottom of the fuel tank
Here s a photo a a 3600 fuel pump I looked up on Mesick s site
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