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| JonnyAngle | Say I want 47psi... | ||
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Senior Guru
 
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...of boost that is. No, just kidding. Say I want 47 psi for my fuel pressure...
When testing it: Do I have the FPR hose disconnected or connected? Do I have the car idling, or just in the run position? How long after I kill the motor should it hold this pressure? Thanks in advance. |
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Posted on: 2008/9/9 20:41
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When I die, I want to go peacefully like my Grandfather did, in his sleep -- not screaming, like the passengers in his car. 
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| bogus | Re: Say I want 47psi... | ||
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Grand Imperial Pooh-Bah
 
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The engine idling, with the vacuum hose off.
It should hold it for a good 15~20 minutes. I had a fuel pump problem a month ago, and it would hold 40 PSI for about 2 minutes, then drop off like a rock to 30. |
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Posted on: 2008/9/9 20:53
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The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
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| Matatk | Re: Say I want 47psi... | ||
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What do you need 47 psi for? Are you testing something or is it for mods?
Matthew |
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Posted on: 2008/9/9 22:10
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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| CentralCoaster | Re: Say I want 47psi... | ||
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What year?
Fuel pressure on my 85 is less than 40 psi. |
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Posted on: 2008/9/9 22:27
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1985 Z51, ZF6 |
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| Schrade | Re: Say I want 47psi... | ||
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Elite Guru
 
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Fuel pressure should be tested static (motor off, fuel rail primed), idle with vacuum on FPR, idle with vacuum off of FPR, and pedal down - gauge taped to windshield.
 Entire article here: http://www.corvetteforums.com/m_37283/tm.htm |
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Posted on: 2008/9/9 23:05
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LT5, Marc Haibeck ECM module, AUTOMATIC!!! 
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| Mekanic | Re: Say I want 47psi... | ||
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Registered Vendor
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Quote:
Correct. And you should have right around 43psi |
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Posted on: 2008/9/10 0:41
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~Rich Polo LT4 Yea tho I walk through the valley in the shadow of rice, I shall fear no turbo, for torque art with me. |
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| JonnyAngle | Re: Say I want 47psi... | ||
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Senior Guru
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Quote:
according to tpis, that's what i should run at. (back of package on adjustable fuel pressure reg). Headers, and basically straight pipes are my performance mods. |
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Posted on: 2008/9/10 0:43
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When I die, I want to go peacefully like my Grandfather did, in his sleep -- not screaming, like the passengers in his car.
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| Mekanic | Re: Say I want 47psi... | ||
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Registered Vendor
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You wont see any performance gains at all upping the fuel pressure, just a loss of mileage and possibly some codes
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Posted on: 2008/9/10 0:52
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~Rich Polo LT4 Yea tho I walk through the valley in the shadow of rice, I shall fear no turbo, for torque art with me. |
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| Matatk | Re: Say I want 47psi... | ||
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Webmaster
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I agree. I don't think with those mods you'll need to up your FP. From what I've read/been told, the computer can adjust for these type of mods without a problem.
Matthew |
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Posted on: 2008/9/10 1:25
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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