Fp ?

[2.8 Bird]

Is this normal: I haven't driven my bird for a week and it has a quarter gas in its tank. When I ran it today I saw 32-34 pressure. But after I gassed up the pressure went back up to 38-40, which is what it is normally. Anyway, does it usually go down that low?

[ssms5411]

Re: Fp ?

Seems low, mine is at 44PSI then goes to 48 PSI at WOT. This is with a Walbro 255 pump though.

[2.8 Bird]

Re: Fp ?

Seems low, mine is at 44PSI then goes to 48 PSI at WOT. This is with a Walbro 255 pump though.

That's what I have too. My reading is at 38-40psi. I know in cooler weather it tends to be a solid 40psi.

What is it suppose to be?

[ssms5411]

Re: Fp ?

I believe stock is around 42-44 psi at idle and 48-50 at WOT, so your right around there, here it doesn't get too cool so its probably higher do to the temp.

[2.8 Bird]

Re: Fp ?

I believe stock is around 42-44 psi at idle and 48-50 at WOT, so your right around there, here it doesn't get too cool so its probably higher do to the temp.

I'm running with stock injectors and FMU. Here in Calif. I can't really do much of anything. I have to stay legal. I was wondering if my psi is low because of the stock injectors?

How about Fuel pressure regulator did you do anything special with that?

[ssms5411]

Re: Fp ?

I kept it FPR stock, I'm running 65lb injectors and a high flow Walbro.

[2.8 Bird]

Re: Fp ?

I kept it FPR stock, I'm running 65lb injectors and a high flow Walbro.

Thanks, i sometimes wonder if there's something wrong with my Walbro.