ironfish96

Does a inline fuel pump for fuel injection have to be located below the fuel tank? Can it be mounted above the tank? Thanks

bczee

iTrader: (12)

It can, but not a good idea.. most inline pumps are designed to push.. and not pull fuel 1st..

Pop N Wood

iTrader: (1)

The lower you can get any pump the better.

ironfish96

could the pump being to high cause to stall out and die?

usafws6

iTrader: (10)

Yes fuel doesnt travel in an upward direction by itself... Gravity

ironfish96

Thanks for the help

jomomma

iTrader: (39)

you can check the fuel pressure at the fuel rails. that should tell you if the pump isnt working correctly

ironfish96

Fuel pressure is dead on when idleing. Have to rig up gauge to check when running.

bczee

iTrader: (12)

By putting the pump in above the tank. you are putting excessive duty on the pump to try and suck or pull fuel into the pump. This is one of the reason many inline pump will have a short services life and incressed failure rate.

It is just note recommened.. read the instruction that came with the pump.

71ANTICARB

iTrader: (23)

You could use a low pressure high volume pump to get fuel to the high pressure pump.

kdavis

iTrader: (14)

seems kind of redundant?

71ANTICARB

iTrader: (23)

Prolly is but if you had a size restriction where you needed to mount the a bigger high pressure pump up higher. With today compact high pressure pumps it prolly is really unnecessary.

Jimbo1367

I wouldn't think this would be wise. The low pressure pump would probably hinder the high pressure pump and cause early failure

71ANTICARB

iTrader: (23)

Why is that all the low pressure pump would be doing is keeping fuel to the high pressure pump. If anything I could see it helping the the high pressure pump in that it already has a positive fuel flow to start with. Remember also we are talking about a less than ideal situation to begin with. If it was an option I would definitely run one the high pressure pump below the fuel level.

bczee

iTrader: (12)

And where would you be putting the low pressure pump.. ?.. above the tank again ?.. His issue or question is about putting the pump above the tank.

Seem to me, same issue with either a High (EFI rate) PSI or a Low PSI pump would still have the same issues if being mounted above the tank. Let not get away from the original question.

71ANTICARB

iTrader: (23)

Ok earlier I partially retracted my statement. I was thinking that he could use a small low pressure (mr.gasket makes one that's about 2" long) pump mounted lower to get fuel to a larger high pressure pump (such as an A1000 about 10" long). I later said that if you could use the small low pressure pump you could prolly find a high pressure to fit in that spot, so kinda making it a moog point. I apologize for any confusion this may have caused.

So yes you can mount it higher but not recommended, prolly causing premature pump failure as bczee stated earlier.