Jump to content
SAU Community

Recommended Posts

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

Link to comment
https://www.sau.com.au/forums/topic/112842-help-walbro-fuel-pump/
Share on other sites

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 ?

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

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)

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.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Hope you aren't too sore after that one, might take a day or 2 to notice yet and I guess it is a loooooong drive home. On the bright side, tube frame front end is a thing at superlap, right?
    • https://www.facebook.com/share/p/18rmVb1SKB/ 
    • The chart of front pressure to rear pressure (with one being on the x axis and the other being on the y axis) is not a straight line on a typical proportioning valve. At lower pressures there is a straight line with one slope, and at higher pressures that changes to a lower slope. That creates a bend in the line at that pressure, called the knee point. If you do not change the proportionng as the pressure gets higher, you will suffer excessive pressure (at one end of the car or the other, depending on which way you look at the proportioning action) and then get lockups at that end. The HFM BM57, from my memory of previous discussions, is based on the BM57 from a different car (to a Skyline), with a different requirement for the location of the knee point and the distribution of pressure front to rear, and so is not a good choice for an upgrade on a Skyline. Here's a couple of links to some old posts, one from here, one from elsewhere. A lot of it pertains to adjustable prop valves, but the idea is the same. There are plenty of discussions on here about this issue from al the many years of people wanting a cheap/accessible option. https://grassrootsmotorsports.com/forum/grm/learn-me-brake-proportioning-valves/236880/page1/ https://grassrootsmotorsports.com/forum/grm/learn-me-brake-proportioning-valves/236880/page1/  
    • Yeah dunno why johhny posted that here with no context, just post on FB/insta bro where he put it up?  Laine had an off at T4 during Thurs prac, he's ok, car is less than perfect, they are done for the weekend, he can fill in the rest. Bando also binned it like 100m up the road.   
    • I feel there must have been a FB/insta post and the weekend did not start well at all I hope everyone is all okay
×
×
  • Create New...