electric fuel pump question

[rbrumm]

All,

 

while driving on the track last weekend my car (Porsche 911) shut down it acted like I was out of fuel .

 

back in the parking lot I tried to start the car but the pump wasnt sounding off like it was running done for the day . after getting home, I did get the pump to start working but the car still would not start , I disconnected the fuel line between the pump and the motor and cranked it over, again the pump sounded like it was running ok but no fuel was pumping out the electric pump is a bosch Is this an obvious pump issue or should I be also be looking for something else ?

 

Thanks for the help

 

Rick

#91

[limp1969]

All,

 

while driving on the track last weekend my car (Porsche 911) shut down it acted like I was out of fuel .

 

back in the parking lot I tried to start the car but the pump wasnt sounding off like it was running done for the day . after getting home, I did get the pump to start working but the car still would not start , I disconnected the fuel line between the pump and the motor and cranked it over, again the pump sounded like it was running ok but no fuel was pumping out the electric pump is a bosch Is this an obvious pump issue or should I be also be looking for something else ?

 

Thanks for the help

 

Rick

#91

Hi Rick i had this same problem in my car. A few things to check

 

Where is the pump mounted? If it is higher than the fuel cell that is a problem.

Did you run the car low on fuel?

 

 

This is what happened to me. I was looking to buy a race car , found a local guy selling a car that had sat for 2 years. I asked him if I could bring it to my shop and get it started. He said yes So I did. I disconected the fuel line up at the regulator and turned on the pump. the idea was to pump any old gas out of the fuel cell. The pump came on but nothing. I took the pump out of the car and messed with it for a day put it back in but still it pumped nothing. Finally I put fuel in the fuel line using a small bottle and the pump worked. The pump is mounted in the wrong spot. It will not suck fuel up to it self. But as long as the fuel is in the lines and pump it will work.

This sounds just like what you are going through. I say move the pump low as you can on the car or have a prime pump in the tank.

Hope this helps

[rbrumm]

Thanks for the reply,

 

I did take the pump out, hooked it to a battery put a couple of hoses on it and still nothing, it ran like a champ but nothing was coming out. the pump was mounted under the car below the fuel cell so the fuel did drain down to the pump but still nothing but a dribble. I broke down a purchased a new one and i'm back at the track all pump pressures are back where they should be. My car did sit in the garage for a couple of years without being run, maybe the old gas caused some problems. as race car go "drive it, fix it, drive it fix

 

Thanks

 

Rick

 

# 91

[mbuskuhl]

Old foam in the fuel cell clogged and killed a Bosch 044 I had before. Now I change the foam every 5 years like you are supposed to and have a screen filter between the pump and cell. If you have old cell foam that could be the culprit and it'll happen again.

[rbrumm]

Thanks

 

It looks like I should change my foam and aviod that problem . what type of screen filter did you use?

 

Rick

 

#91

[mbuskuhl]

You want a high flow filter between the cell and pump to protect the pump, something like this http://www.summitracing.com/parts/EAR-230206ERL/- make sure you get one you can dissasemble, they will have a fine mesh screen that you can then just clean out. You'll also need to keep a filter after the pump and before the rails, I like the CM Filter 1 micron canister for EFI.

 

Check the Fuel Safe or ATL sites, I believe they both recommend the 5 year replacement on foam, that I can attest to as well worth it and necessary. I'm not sold on this 5 year bladder though, but we don't have a choice!

[rbrumm]

Thanks for the info......

 

Rick

# 91