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Whats 4th gen fuel pressure?

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Old 12-15-2006, 07:56 PM
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Whats 4th gen fuel pressure?
I have a 98, wondering what the fuel pressure is in our cars.
thanks
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Old 12-15-2006, 09:42 PM
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2.3 bar (34 psi) at idle vacuum
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Old 12-15-2006, 10:11 PM
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its actually 2.4 bar (34 psi) at Idle and 3.0 bar (43 psi) with the key in the ON position
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Old 12-16-2006, 12:06 AM
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Originally Posted by MaximaSE96
its actually 2.4 bar (34 psi) at Idle and 3.0 bar (43 psi) with the key in the ON position
It's actually 2.397 bar.. So, you're both right in a sense.
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Old 12-16-2006, 06:13 AM
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It's actually 2.344217475 bar...





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Old 12-16-2006, 06:27 AM
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Originally Posted by nismology
It's actually 2344217475 bar...





DAMN!! Thats a lot of bars!!!
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Old 12-16-2006, 07:16 AM
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I see what you did there...














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Old 12-16-2006, 07:50 AM
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thanks guys, I got a laugh too
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Old 12-16-2006, 08:21 AM
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FP at idle means jack, toss in some cams and watch it change, have a vac leak and see it change again. There is no point in trying to get it right at idle.

Its 3 bar with the vac line off, which is like WOT.
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Old 12-16-2006, 11:00 AM
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Originally Posted by JSutter
FP at idle means jack, toss in some cams and watch it change, have a vac leak and see it change again. There is no point in trying to get it right at idle.

Its 3 bar with the vac line off, which is like WOT.
Correcta mundo.
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Old 12-16-2006, 11:49 AM
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Originally Posted by 2da mizzax
DAMN!! Thats a lot of bars!!!
hahaha..
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Old 12-16-2006, 04:23 PM
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Originally Posted by Apparition
hahaha..
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Old 12-16-2006, 08:07 PM
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Originally Posted by JSutter
FP at idle means jack, toss in some cams and watch it change, have a vac leak and see it change again.
While this is true, neither of these exceptions applies to him. Besides, a vacuum leak means that something is wrong so that's a moot point. He asked for the specification and we gave it to him.
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Old 12-16-2006, 08:21 PM
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Well technically when some one asks for fuel pressure on a 4th gen (most Nissans) the given answer will be 3 bar. Thats what it runs on plain and simple. Since the 2nd poster responded with the idle psi only, which basically means nothing, That wont help the guy at all. Then you all went on a rampage about idle FP down to the .xxxxxxxxx place. Again it doesnt mean anything and its only good for checking that the FPR is functioning correctly. So I was just giving the actual answer and not just useless info.
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Old 12-16-2006, 08:37 PM
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Originally Posted by JSutter
Well technically when some one asks for fuel pressure on a 4th gen (most Nissans) the given answer will be 3 bar. Thats what it runs on plain and simple. Since the 2nd poster responded with the idle psi only, which basically means nothing, That wont help the guy at all. Then you all went on a rampage about idle FP down to the .xxxxxxxxx place. Again it doesnt mean anything and its only good for checking that the FPR is functioning correctly. So I was just giving the actual answer and not just useless info.
The idle specification is still useful, although i agree that on it's own it means nothing. But the idle FP down to the .xxxx place was a joke (at least on my end).
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Old 12-16-2006, 09:22 PM
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how can you detect a vacumm leak?
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Old 12-16-2006, 10:29 PM
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Originally Posted by Dexter
how can you detect a vacumm leak?
when you are vacuuming your carpet and you see the dust flying back out of the Hoover, that is how you know you have a leak. (Thats why i bought a Dyson. Never loses suction!!)
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Old 12-17-2006, 12:17 AM
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Originally Posted by nismology
The idle specification is still useful, although i agree that on it's own it means nothing. But the idle FP down to the .xxxx place was a joke (at least on my end).
Sarcasm > them
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