NOS guys....fuel pressure problem with my NOS...
10-27-2001, 10:32 PM
#1
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NOS guys....fuel pressure problem with my NOS...
ok...so this has been happening ALOT lately...and at perfect bottle pressure too. I FINALLY got my guages in today and this is what I discovered....when I spray...it's NOT a smooth pull like it used to be...it gets jerky (50-shot...stock fuel system, FPSS not hooked up) and now with my Fuel pressure gauge installed I can see whats happening. When I go full throttle off the bottle...my car pulls smoothly and normally..at 48-50 psi (FP). When I spray it hits HARD and pulls normally for about 2 seconds..and the FP comes up to around 62-63 psi...but then the acceleration gets all jerky and the FP guage needle jumps around.....my A/F guage just reads the same 3 green and 1-2 yellow the whole time. then when I let off the accel...the FP jumps to around 70psi...and then goes back to Idle pressure...do I need a new fuel pump??? Has anyone else experienced this???? Could it be my fuel pressure regulator??
10-27-2001, 10:40 PM
#2
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Most likely the fuel pump or something wrong with the second soleniod that's suppose raise the fuel pressure when nitrous is on. I'm not very familiar with dry kit, but I would check the solenoids first. Nissan fuel pump rarely goes bad.
10-27-2001, 11:23 PM
#3
Originally posted by 1MAX2NV
Most likely the fuel pump or something wrong with the second soleniod that's suppose raise the fuel pressure when nitrous is on. I'm not very familiar with dry kit, but I would check the solenoids first. Nissan fuel pump rarely goes bad.
Most likely the fuel pump or something wrong with the second soleniod that's suppose raise the fuel pressure when nitrous is on. I'm not very familiar with dry kit, but I would check the solenoids first. Nissan fuel pump rarely goes bad.
Erik
10-28-2001, 06:21 AM
#6
Re: NOS guys....fuel pressure problem with my NOS...
Originally posted by BriGuyMax
ok...so this has been happening ALOT lately...and at perfect bottle pressure too. I FINALLY got my guages in today and this is what I discovered....when I spray...it's NOT a smooth pull like it used to be...it gets jerky (50-shot...stock fuel system, FPSS not hooked up) and now with my Fuel pressure gauge installed I can see whats happening. When I go full throttle off the bottle...my car pulls smoothly and normally..at 48-50 psi (FP). When I spray it hits HARD and pulls normally for about 2 seconds..and the FP comes up to around 62-63 psi...but then the acceleration gets all jerky and the FP guage needle jumps around.....my A/F guage just reads the same 3 green and 1-2 yellow the whole time. then when I let off the accel...the FP jumps to around 70psi...and then goes back to Idle pressure...do I need a new fuel pump??? Has anyone else experienced this???? Could it be my fuel pressure regulator??
ok...so this has been happening ALOT lately...and at perfect bottle pressure too. I FINALLY got my guages in today and this is what I discovered....when I spray...it's NOT a smooth pull like it used to be...it gets jerky (50-shot...stock fuel system, FPSS not hooked up) and now with my Fuel pressure gauge installed I can see whats happening. When I go full throttle off the bottle...my car pulls smoothly and normally..at 48-50 psi (FP). When I spray it hits HARD and pulls normally for about 2 seconds..and the FP comes up to around 62-63 psi...but then the acceleration gets all jerky and the FP guage needle jumps around.....my A/F guage just reads the same 3 green and 1-2 yellow the whole time. then when I let off the accel...the FP jumps to around 70psi...and then goes back to Idle pressure...do I need a new fuel pump??? Has anyone else experienced this???? Could it be my fuel pressure regulator??
10-28-2001, 04:17 PM
#7
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Re: Re: NOS guys....fuel pressure problem with my NOS...
Originally posted by dmbmaxima88
so how'd the 300zx pod work?
so how'd the 300zx pod work?
10-28-2001, 04:38 PM
#10
www.autoperformanceengineering.com
FPD006 (it says eclipse but it's the one you need)
$118 shipped
255lph, all the fuel you'll ever need and more
Install takes 20 minutes max
Good luck.
FPD006 (it says eclipse but it's the one you need)
$118 shipped
255lph, all the fuel you'll ever need and more
Install takes 20 minutes max
Good luck.
10-28-2001, 04:55 PM
#11
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Originally posted by mtrai760
www.autoperformanceengineering.com
FPD006 (it says eclipse but it's the one you need)
$118 shipped
255lph, all the fuel you'll ever need and more
Install takes 20 minutes max
Good luck.
www.autoperformanceengineering.com
FPD006 (it says eclipse but it's the one you need)
$118 shipped
255lph, all the fuel you'll ever need and more
Install takes 20 minutes max
Good luck.
will I need an adjustable FPR too??? Will I run too rich off the bottle???
10-28-2001, 05:52 PM
#12
unfortunately, yes, you will run a bit rich off the bottle unless you get a regulator. Ive been waiting for the $$$ to buy a regulator myself...
Originally posted by BriGuyMax
yea...now I just need the $$$ for it
will I need an adjustable FPR too??? Will I run too rich off the bottle???
yea...now I just need the $$$ for it
will I need an adjustable FPR too??? Will I run too rich off the bottle???
10-28-2001, 06:29 PM
#13
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Originally posted by mtrai760
unfortunately, yes, you will run a bit rich off the bottle unless you get a regulator. Ive been waiting for the $$$ to buy a regulator myself...
unfortunately, yes, you will run a bit rich off the bottle unless you get a regulator. Ive been waiting for the $$$ to buy a regulator myself...
10-28-2001, 06:59 PM
#14
Originally posted by BriGuyMax
will I run rich during normal driving...or only full throttle off the bottle???? doesn't the ECU constantly vary the mixture during normal partial throttle driving?
will I run rich during normal driving...or only full throttle off the bottle???? doesn't the ECU constantly vary the mixture during normal partial throttle driving?
yes it does but it can't compensate enough for the different fuel pump.
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