StellarZ

I am gonna toss this damn car into a river if I cannot figure out what the hell is going on here... I just finished installing my new motor, everything hooked back up and all. I go to turn the motor over a few times to build oil pressure. The gauge bounces up to max oil pressure... I am assuming that is ok and if the car ever really starts it will dip back down into normal range. At any rate I then attach the plug wires and try to fire the car up. No go. It turns over just like normal but it will not fire. So I take the plugs out and they look new like the day I bought them. So I figure I must have put the fuel lines on backwards, checked them and they were not backwards. So I took out the leading spark plugs and had a friend turn the motor over a few times while I watched what came out and no fuel was coming out. So I check to see if I can hear the fuel pump. I can hear a *VERY* faint buzz if I strain. Of course by now I cannot remember what it sounded like before. How loud should the fuel pump be? Anyway I checked the fuel pump solenoid deal and it is fine. I am running out of things to check because the injectors are new. Any thoughts on what I should do? I am sure this probably does not make sense but I am really pissed off right now and I am desperate for help. Also, something else wierd, my fans like to just kick themselves on for no reason... even with the key out they just turn themselves on. Any thought? Thanks

oneflytrini

iTrader: (1)

i think your FD is haunted

luneytune

When you checked the fuel lines was there fuel pressure there when you disconnected or did you do the depressurize thing. Make sure you don't depress the gas pedal to the floor when starting as fuel is turned off then.

Turboanka

Are you sure you have gas in the tank- just kidding.
It's probably a case of either the spark plugs firing and no fuel or sparks plugs not firing but there is fuel or the lack of both.
Firstly, make sure the plugs are firing. If they are you have eliminated an ignition problem.
In-tank fuel pumps are not very loud, so the faint buzz is not necessarily an indication of a problem.
Aim your investigation at anything that may have changed to the process.
In addition to the fuel pump relay, also check the circuit-opening relay and the fuel pump resistor. If you have access to a fuel pressure gauge, check the line pressure. You should see 36-38 psi. If the pressure checks out, then you know that there is fuel supply to the injectors. At this point you would also know that the problem is with the injection control circuit or the engine computer.
Hope you didn't weld anything on the car with the computer connected - ZAP. However, if the plugs fire the ECU is probably OK.
At this point it's time to hunt for dangling connectors.
Good luck!

Slither

Have you changed the filter lately? If so, then i would check to see how much, if any fuel pressure you have. With the key cycled forward, but not on, you should have fuel pressure.
Id try that first, i read that you do have spark, correct? If you have spark and fuel pressure, its the timing.
There are only 3 things to consider when starting a car. Fuel, ignition and air. DUmb question, but you are getting air, correct?

rotorbrain

the fuel pump was loud on mine. maybe it is not all the way connected to the nipple on the pump apparatus. when i replaced mine the pump was barely in there. yours might be out all the way. did you prime the fuel system. i know mine took a while to start. . . so i decided to prime the system and it started right up. gets all the air bubbles out of the lines. . . definately dont want that.

oh yeah, if youre gonna push it into a lake then push it into the lake right next to my driveway, it would be a great lake to push it into. haha.

REDLINE

[QUOTE]Originally posted by Turboanka
[B]Are you sure you have gas in the tank- just kidding.
]


No, Really!! Is there gas in the car? Because it happened to my friends car..we put the motor back in and all and tried starting it...it would crank, come to life and die right away...we kept trying to figure out what was wrong when duh!!.....no gas!!!

StellarZ

Yeah I definitely have gas... even added more to make triple sure. We figured out that the fuel pump will not pump gas with the key on unless we jump the fuel pump. I have no idea how to go about dealing with that. I am definitely getting spark though and tomorrow I am picking up an inline fuel pressure gauge to check the fuel pressure. Is there any reason why my fuel pump will not pump gas unless it is jumped? This whole deal is getting out of control. Could I have a bad pump? I also replaced the fuel filter so that is not it. Also when we did jump the fuel pump the injectors were not firing... how much fuel pressure must there be in order for the injectors to work?

Slither

Could it be your relay? It is definatly electrical, whatever the cultprit is

rotorbrain

i think that is how it works. i couldnt hear anything when my keys were in the on position until i jumped the wire. then it was really loud. you will know when it is on. take your pump out and check it out. it is easy to do and at least you can say that you checked it and it is out of the way and you wont have to deal with that anymore and this is a classic run-on sentence. haha

StellarZ

The relay seems to be working fine... it is clicking and everything and we took the casing off and it is making contact. Even when we jumped the fuel pump it was not loud at all. It seems to be doing something in there because it vibrates a little bit and makes a sound that is faintly audible but I dont think it is as loud as it is supposed to be. I guess I will check fuel pressure and look at the pump. Is it normal for the fuel pump not to pump unless it is jumped? I am getting spark... would I still get spark if my computer were fried?

airborne

i have a supra fuel pump *and a starting problem* and when i tested the pump i could hear it clearly, plus a little waterfall like sound. any 'fluid moving' sounds in there?

VELCRO SHOES

Justin,call gary hagner and have him help you out.

Slither

Usually, if the computer is fried, the fuel pump will come on and not cut off because the computer will not be there to tell it when to cut off.
The pump will come on for about 2 seconds, then the computer will tell it to cut off.

StellarZ

Velcro, I have been trying to get a hold of you hardcore. I do not know Gary's number... you should get a hold of me so I can talk to you... Ill email you. Any ideas on my fan problem, how they just like to kick on sometimes? Is it grounding out sometimes? Also will the injectors not fire unless there is a certain psi of fuel pressure?

VELCRO SHOES

Dude,email me............ and I'll give you my number!

shawnk

A friend and I just repressurized my fuel lines today and started my car after a month of work on it and after we jumped the F/P and ground we could feel the pressure in the fuel lines by simply pinching the rubber lines - very easy to tell if pressurized. I couldn't hear the pump (which I just replaced also) at all. Another thing you can do is take a socket with a towel wrapped around it and loosen the bolt on the front side of the secondary fuel rail. If there is pressure in the line it will start venting fuel into the towel. This is how I released the pressure when I went to remove my injectors since my engine was a good bit apart at the time. I am not sure if this is a recommended practice, but it worked for me. If you know fuel is there then you can move on to the next steps - injectors then fire.

Good luck!

StellarZ

ok... I just got done looking at the car some more.

1st off I think I am missing something here... my fuel pump will only pump fuel if I jump it with the f/p and gnd. It will not pump any fuel without doing that. Isnt it supposed to pump fuel for a couple seconds when I turn the key to the on position? Right now it will not pump any fuel unless the key is on and the pump is being jumped.

Next I am sure that I have spark beause we used a little starter fluid and the car fired up for a couple seconds but the injectors will not spray any fuel.

I hooked up the fuel pressure gauge and when the fuel pump is jumped and the key is in the on position it reads about 45psi. Yet when I try to start the car it will not fire up. It is getting no fuel. The fuel is making its way around the rail and all but apparently the injectors are doing nothing.

I would then think that it would have to be the injectors but they were just rebuilt and have not even been used yet. We hooked a voltmeter to the connector and it read about 12v when the key is turned to the on position. I am not sure if this means anything but I need to figure something out.

P'cola FD

This may sound stupid, but are you sure the injectors are hooked up/ hooked up right? Have you checked the circuit opening relay?

StellarZ

Yeah I am sure the injectors are hooked up right... I dont mean to sound ignorant or anything but my knowledge on this electrical stuff is limited and the manual is not being very helpful, where is this circuit opening relay?

Turboanka

The circuit opening relay is in the Relay & Fuse Block (the one with the A/C, DEFOG, etc. relays). It's located just above the Main Fuse Block (northeast of it). If you are looking at it from the top, it's the one that is sandwiched between the five fuses and the EGI main relay. Hope this helps.

StellarZ

Thanks guys... what would cause the injectors not to fire? Have I got an electrical problem here?