fuel pressure test

[joakwin]

<div class='quotetop'>QUOTE(RedHeartbeat &#064; Mar 11 2006, 11&#58;50 PM) [snapback]46792[/snapback]</div>

The bleed port that kind of looks like a tire valve or a/c port is where you test the pressure. Install the gauge on the connector and then turn the key on and leave it there. It should pressure up to 58 lbs and hold that level for at least 5 minutes without the fuel pump running. After that, start the engine and let it idle. Check for 58 lbs again. Pressure should always stay at 58 lbs. Next, rev the engine and monitor the pressure level. After that comes a driving test, pretty hard to do with the gauge under the hood though. It&#39;s best done on a dyno where a load can be simulated. If you have access to an electronic fuel gauge you could mount it in the cab and monitor the pressure. I don&#39;t know if anyone makes an extension hose for the fuel pressure gauge hose.
[/b]

looks like im gonna have to get some tape when i do this truck


im gonna do the test at the base auto shop because i don&#39;t have a gauge myself, been looking at sears online for a gauge and they have them for a good price, i think i may just buy one myself and do the test
be a way to let my wife let me get one

i think my fuel pressure is low or the regluator is going bad, but i hope not

im trying everything i can to figure out this p0300 code that seems to happen alot with nbs motors

laters

[joakwin]

<div class='quotetop'>QUOTE(joakwin &#064; Mar 12 2006, 12&#58;50 AM) [snapback]46795[/snapback]</div>

looks like im gonna have to get some tape when i do this truck
im gonna do the test at the base auto shop because i don&#39;t have a gauge myself, been looking at sears online for a gauge and they have them for a good price, i think i may just buy one myself and do the test
be a way to let my wife let me get one

i think my fuel pressure is low or the regluator is going bad, but i hope not

im trying everything i can to figure out this p0300 code that seems to happen alot with nbs motors

laters
[/b]

i went and picked up a gauge today so in a few mins or so im gonna go downstairs and do the test
i&#39;ll let u guys know the out come

[joakwin]

<div class='quotetop'>QUOTE(joakwin &#064; Mar 15 2006, 11&#58;09 PM) [snapback]47064[/snapback]</div>

i went and picked up a gauge today so in a few mins or so im gonna go downstairs and do the test
i&#39;ll let u guys know the out come
[/b]

i just did the test somewhat, didn&#39;t have to do a driving test because it was so bad from the get go

when i turned on the key motor off, the gauge went to 56psi
and then when i started the truck the gauge went to 52psi
and then when i rev it by hand, the 1st sec the gauge jumps up to 58psi and then goes back down to 52 psi


u were saying that the lsx motors need 58psi to run right, so im pretty much running super lean like crazy

so i need to replace my fuel regluator on the truck?


peace