Help Walbro Fuel Pump

[akkii]

hey guys, i just installed a walbro pump in my r33 gtst

it starts up, then dies, i dont know wats wrong wif it,

i do haf a power fc and aftermarket turbo and i hafnt had a dunyo tune

simply put, i start it up and runs for 5 seconds then it struggles and dies, is there a fuse or sumthing i hafe to up grade?

any help regarding this is greatly appriciated

[nuffin_werks]

when you replaced the fuel lines on the tank cap, did you put them on in the right places ?

Also when you turn the key to "ON" , can you hear the pump running? When you start the car, can you still hear the pump running ?

[saliya]

hey guys, i just installed a walbro pump in my r33 gtst

it starts up, then dies, i dont know wats wrong wif it,

i do haf a power fc and aftermarket turbo and i hafnt had a dunyo tune

simply put, i start it up and runs for 5 seconds then it struggles and dies, is there a fuse or sumthing i hafe to up grade?

any help regarding this is greatly appriciated

This happens consistently? That is, if you turn it off, turn it back on for a few seconds then start it runs again

for a few seconds?

If so, kink in the pressurised fuel line inside the tank, most likely. Enough fuel is getting there to start

but not maintain the motor.

Unfortunately you'll have to pull it back apart to see...

Regards,

Saliya

[akkii]

when ignition is on, i do hear it priming

i put back the standered pump, and it works fine

i guess i bought a dogdy pump or sumthing

[T04GTR]

i dont think they like like the 2 stage voltage feed that is used for the factory one.

you need to hook a direct earth to pump negative.

also hook a direct 12v feed to the positive of the pump.

to bypass the factory fuel pump controler. so it gets a constant 12v feed.(the relay is next to the boot fuse box)

[akkii]

so basically , i find the pump realai n cut the wires that go in to the relai

n wire them anoud it , so it dose not go into the realay?

[Amaru]

Correct the standard relay screws around with voltages (drops as low as 10v at times) with the standard pump. 99.9% of aftermarket pumps including the Bosch and Walbro ones dont like this and you will kill the pump fairly quickly.

I ran a completely new 12v feed to my Bosch 044 with a thicker gauge wire as I have also heard depending on condition, the amount of current aftermarket pumps can suck can well and truely overload what the stock wiring is capable of and get extremely hot/catch fire. Havent seen it first hand and it may simply be an old wives tale, but for the extra $50 it cost for my mechanic to do it, its cheap insurance.

[akkii]

thanks for the help guys