TwinTurbo.NET: Nissan 300ZX forum - When it's idling and the manifold is in a negative
Subject
When it's idling and the manifold is in a negative
Posted by
Audioquest
on July 30, 2008 at 6:09 PM
This message has been viewed
126
times.
In Reply To
A "weak" pump?
posted by Broke_as_****
on July 30, 2008 at 10:26 AM
Message
state it's supposed to lower the fuel pressure isn't it? Normally at zero it's around 45, and increases per pounds of boost and does the same under vacuum.
Follow Ups
Fuel pressure issue: Day 153
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Broke_as_****
10:45:18 07/29/08
Damn... I was going to offer you my ECU, but you have
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91Z32TT
10:58:22 07/29/08
ar you still prvr equipped (sorry dont want to read all old
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gt300zxtt
11:13:36 07/29/08
PRVR is gone (n/m)
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Broke_as_****
11:14:49 07/29/08
Damnit I was just going to ask about prvr - since it's
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91Z32TT
11:21:31 07/29/08
Re: Fuel pressure issue: Day 153
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Chad M (CA)
11:22:04 07/29/08
You'd have to ask JWT about that one
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Broke_as_****
11:39:55 07/29/08
Re: You'd have to ask JWT about that one
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Chad M (CA)
11:58:49 07/29/08
Re: Re: You'd have to ask JWT about that one
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Broke_as_****
14:21:29 07/29/08
Re: Re: Re: You'd have to ask JWT about that one
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Chad M (CA)
15:37:20 07/29/08
Re: Re: Re: Re: You'd have to ask JWT about that one
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Broke_as_****
16:13:55 07/29/08
Ok I understand now....
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Chad M (CA)
16:51:35 07/29/08
It pulls around 15-20 inches at idle
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Broke_as_****
17:03:16 07/29/08
Re: It pulls around 15-20 inches at idle
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Chad M (CA)
17:15:06 07/29/08
Thanks for chipping in
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Broke_as_****
17:37:19 07/29/08
Have you swapped gauges around to rule that out? (n/m)
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Audioquest
13:36:55 07/29/08
Yes (n/m)
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Broke_as_****
14:05:16 07/29/08
Very odd how in that same piece of fuel line from the tank
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Audioquest
16:13:13 07/29/08
That's why I bypassed all of those lines
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Broke_as_****
16:17:13 07/29/08
I think your gauge is suspect---->
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Audioquest
23:35:03 07/29/08
I've done that
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Broke_as_****
00:36:12 07/30/08
Maybe you just got a weak pump? HAve a look at this
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Audioquest
08:12:03 07/30/08
A "weak" pump?
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Broke_as_****
10:26:41 07/30/08
When it's idling and the manifold is in a negative -
Audioquest
18:09:38 07/30/08
Re: When it's idling and the manifold is in a negative
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Broke_as_****
12:27:56 07/31/08
Replace the fuel rails?
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LitlElvis
14:57:29 07/29/08
I did a few years ago
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Broke_as_****
16:00:15 07/29/08
If it is dropping from the back of the car to the front
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Spddracer
18:03:04 07/29/08
Re: If it is dropping from the back of the car to the front
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Broke_as_****
18:28:53 07/29/08
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