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#256
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Re: STeeL's built motor/turbo build
Dumb question from an even dumber person:
How do you check the fuel pressure? I rented a tester from Auto Zone and the directions with it plus one very vague YouTube video lead me to believe I would T it in line between the fuel rail and the fuel filter... Doing this showed me 0 psi of pressure every time, even with the car running... |
#257
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Re: STeeL's built motor/turbo build
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If it does not then, A the pump is not working. B the pressure reg is not holding pressure. C the pump is only working when the starter is working. Harvey.
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One Arm Bloke. Tell it like it is! 95 Lsi. Bordeaux Pearl, Aust. RHD.149,000Kls Subaru BBS wheels. 97 Liberty GX Auto sedan. 320,000Kls. 04 Liberty 30R Auto Premium. 92.000kls. |
#258
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Re: STeeL's built motor/turbo build
I put it in directly after the filter and before the metal hose that runs under the intake. It showed zero when I turned the key 20 different times, though I can hear the pump running... And If I try to start the car like this, it comes on and runs like it usually does. The button to release pressure on the tester does nothing, and taking the T out drips fuel all over the place. Only thing I can think of I didn't do that was in the directions was put the 6 foot tube that drips out the excess fuel into an approved container.. I just let it hang off the side of the car onto the ground (not a drop ever came out of it anyway)
If that is correct, can I assume the tester does not work? |
#259
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Re: STeeL's built motor/turbo build
If you fit the T and the hose to the gauge, but leave the gauge off the pipe, does it pump fuel out the hose when you turn the key on?
If fuel is pumped out, and when you fit the gauge on the pipe, is shows no pressure. Either the gauge is dud (not likley) or the fuel is just getting pumped around the circuit with out any pressure, due to the pressure reg not holding it to a pressure. The vid that you showed look like it had pressure when it started, but ran out of fuel as it ran. Harvey.
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One Arm Bloke. Tell it like it is! 95 Lsi. Bordeaux Pearl, Aust. RHD.149,000Kls Subaru BBS wheels. 97 Liberty GX Auto sedan. 320,000Kls. 04 Liberty 30R Auto Premium. 92.000kls. Last edited by oab_au; 04-27-2013 at 08:56 PM. |
#260
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Re: STeeL's built motor/turbo build
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#261
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Re: STeeL's built motor/turbo build
Bazza,
Here's a pic of the FPG I've got piped into my system. Has worked like a charm from the start. Cheers, Bill
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Retired NASA Rocket Scientist Most famous NASA "Child" - OSIRIS-REx delivered samples from asteroid BENNU to Earth in Sept. 2023 Center Network Member #989 '92 Fully caged, 5 speed, waiting for its fully built EG33 '92 "Test Mule", 4:44 Auto, JDM 4:44 Rear Diff with Mech LSD, Tuned headers, Full one-off suspension '92(?) Laguna, 6 spd and other stuff (still at OT's place) My Locker |
#262
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Re: STeeL's built motor/turbo build
That is exactly how I did mine.
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#263
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Re: STeeL's built motor/turbo build
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Thanks for all your help thus far, everyone . |
#264
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Re: STeeL's built motor/turbo build
But there is no fuel pressure gauge installed in the video you posted
Remember - Fuel, Air, Spark - So, how about this: 1. Will the engine continue to run if you hold the throttle body butterflies open (AIR)? 2. Do you actually have steady fuel to the injectors (FUEL)? 3. Are all the coils good (SPARK)? I agree with Harvey in that the video sounds like it is running out of gas. Can you post a video with a fuel pressure gauge installed? My guess is that you're getting a pulse of fuel and then the fuel pump is shutting off. Good luck. Bill
__________________
Retired NASA Rocket Scientist Most famous NASA "Child" - OSIRIS-REx delivered samples from asteroid BENNU to Earth in Sept. 2023 Center Network Member #989 '92 Fully caged, 5 speed, waiting for its fully built EG33 '92 "Test Mule", 4:44 Auto, JDM 4:44 Rear Diff with Mech LSD, Tuned headers, Full one-off suspension '92(?) Laguna, 6 spd and other stuff (still at OT's place) My Locker |
#265
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Re: STeeL's built motor/turbo build
I didn't buy a fuel pressure gauge, I just rented a testing tool. It isn't made to sit permanently in the bay even if I didn't have to give it back. That, and I didn't have it when I made the video
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#266
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Re: STeeL's built motor/turbo build
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The pump is controlled by the ECU with different stages. It runs for a few seconds when the key is turned on, and then it stops. It then runs while the starter is working, if the engine does not fire, the pump stops. It will then run all the time when the engine starts and runs. We need to know if the pump keeps running in all the stages, as it could just run to build pressure, but stops running when the starter stops working, so that there is no pressure to keep the engine running. Harvey.
__________________
One Arm Bloke. Tell it like it is! 95 Lsi. Bordeaux Pearl, Aust. RHD.149,000Kls Subaru BBS wheels. 97 Liberty GX Auto sedan. 320,000Kls. 04 Liberty 30R Auto Premium. 92.000kls. |
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