Not getting any feul! Please Help!

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Texas240sx
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Joined: Thu Feb 20, 2003 11:00 am

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I have been reading post like crazy for the past month! I got my 89' 240sx to start with a 96' ka24de, 96' ecu, 96' distributor, and 96' harness! It took me a while to figure out the wiring, but I finally got spark at the distributor. I don't think I am getting fuel to the engine! I have the black/pink stripe fuel pump line connected to the correct spot on the 96' ecu, so I know it's connected. I took off my fuel line from the fuel filter and it would spit out gas whenever the battery was connected. Just in case I went ahead and just put in a new 300zx fuel filter. When I spray starter fluid into the intake it starts and then shuts off due to no fuel. Does anyone have any ideas or suggestions on the fuel system. I have the fuel filter line connected to the tube that leads between the injectors and the second line which I believe is the return line connected to the tube closest to the fire wall. Maybe I have them connected wrong? Can someone please explain it to me? Thanks!


GroundZero
Posts: 224
Joined: Thu Aug 14, 2003 6:27 pm

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try checking your fuses (i had this problem the other night, a fuse labeled ENGINE CONT blew), try testing the fpr, test for voltage at each of the individual injector harnesses, thats bout all i can think of right now.

NISTECH
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Joined: Sun May 25, 2003 4:17 am

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do as ground zero said with the voltage to the injectors, if voltage is present also check for injector pulse from the ecm while cranking. if no pulse you need to figure out why the ecm is not pulsing the injector circuit. 2 signals are sent from the distributor to the ecm for injector pulse. air flow meter signal is sent to the ecm to control injector pulse also you need a start signal sent to the ecm. you need to have a 96 fsm or fsm wiring diagram to test these circuits.

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Texas240sx
Posts: 110
Joined: Thu Feb 20, 2003 11:00 am

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Thanks for your replys! I'm gonna go outside right now and check my fuses! I hope it's that. What tool do I use to test voltage at the injectors, and can I buy it at an autoparts store. I have wiring diagrams for the 96' that help out alot! I got the from various sites. It's weird because I know fuel is getting to the injectors, but for some reason the injectors (I guess) aren't kicking on. I'm studying the wiring diagram right now to see if I can figure the injectors out before, I check for voltage. Is there any easy way to test if injectors are kicking on? Thanks alot!

NISTECH
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Joined: Sun May 25, 2003 4:17 am

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if you have a wiring diagram test for 12v on the wire comming from the relay if ok then plug a noid light into the injector connector,you can get a gm one from a local auto parts store since they dont carry a nissan specific one. when cranking it should flash. if it doesnt then you need to start checking inputs to the ecm that i listed above. cause one is preventing it from pulsing the injectors and the dist is the primary signal the ecm uses to pulse injectors during cranking.

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Texas240sx
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Joined: Thu Feb 20, 2003 11:00 am

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Sounds like a plan! I just checked the fuses and they are all okay! Tommorrow I'm gonna go buy a tester at Autozone! We use to have one, but my friend borrowed it and never brought it back! Even if the distributor (primary signal) is not exactly at TDC, it would still pulse the injectors right. When I use starter fluid it stays on for a while without bogging. I am also gonna check the ecm lines to see if power is getting to the injectors. I can't wait to figure it out.

NISTECH
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Joined: Sun May 25, 2003 4:17 am

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yes it will still pulse the injectors if timing is off but since you got it running by substituting fuel i would say your timing is ok. the power supplied to the injectors does not come from the ecm. it comes from a relay that is operated by the ecm. the ecm pulses the ground to the injectors. do not use a test light on that circuit only use the noid light or a dvom. a test light can fry the driver in the ecm for the injectors.

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Texas240sx
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Joined: Thu Feb 20, 2003 11:00 am

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Glad you told me that! They called me in to work today. so I guess I have to wait till tomorrow. I'm gonna take the wiring diagram with me to work so I can figure out where that specific relay is at. I checked the big black/red stripe wire and everything is connected to that correctly. I believe it's ignition power! I'm gonna buy that noid light and solve this! Thanmks!

GroundZero
Posts: 224
Joined: Thu Aug 14, 2003 6:27 pm

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you can pick up a digital voltometer at wally world for $20, it's very useful.

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Texas240sx
Posts: 110
Joined: Thu Feb 20, 2003 11:00 am

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Just got out of work a little while ago! We have a walmart that is similar to wally world, so I am gonna go check to see how much they are there! Thanks!


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