No fuel into cumbustion chamber
11-06-11, 04:28 PM
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No fuel into cumbustion chamber
Hi everyone so anyway I have a 86 non turbo fc I believe there called. Put a 87 motor in as coolant seals where gone. Anyways got new motor in but getting no fuel will fire if you squirt gas in but will not run after. Do I have to bleed the fuel lines or is there something else it could be any help would be great
11-06-11, 05:39 PM
#4
There are two ways to jumper the check connector. I find it best to do it at the Circuit Opening relay because it controls the voltage supply to the the fuel pump and you can diagnose other problems related to the fuel system from this particular relay. The relay is Yellow and Black and is located under the dash just to the right of the steering wheel. It has two rows of wires, three on the top and two on the bottom. The bottom two wires are solid Black and a Brown wire. Jumper these two wires and the pump runs w/key to on.
11-06-11, 05:52 PM
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You just need to jumper those two bottom wires. You will hear the fuel pump running with the key turned to "ON".
The circuit opening relay under the dash looks like this:
The circuit opening relay under the dash looks like this:
11-06-11, 07:06 PM
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Sweet that's diagram is very helpful thank you so much guys very very helpful I'm new to these rotaries but man oh man I love them I'll try that tommorow and let you know if I got her going
11-06-11, 07:13 PM
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Actually one more quick stupid question what side is the inlet on fuel rail so which one is return and inlet after filter
11-06-11, 07:41 PM
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11-06-11, 07:43 PM
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do you drive in reverse?
somehow i knew this question was going to be asked too.. lol
mind you if this is a complete Jspec engine swap then those are reverse. wacky japanese do everything on the other side.
somehow i knew this question was going to be asked too.. lol
mind you if this is a complete Jspec engine swap then those are reverse. wacky japanese do everything on the other side.
Last edited by RotaryEvolution; 11-06-11 at 07:45 PM.
11-06-11, 07:56 PM
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Lol only backing out of driveway and I got it know just want as much info before I'm out there at my uncles it's just a 45 min drive from me so I just want to know what I'm doing instead of getting there second guessing but thank you for your time and you have your self a great night
11-07-11, 05:26 PM
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Hey problem all fixed changed primary fuel injectors she is up and running running very smooth thanks again for all your help till hopefully no next time take care
11-25-11, 06:24 PM
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ok, changed fuel injectors? Are you saying you swaped your primary and secondary injectors like you had put them in the wrong locations? Or you bought new injectors? I'm having the same problems as james86 was. My RX-7 is a 89 N/A with an engine rebuild. I did the jumper connection like satch showed.. the pump did not activate. I did however hear a clicking noise coming from the engine area. I have disconnected the two fuel lines from the fuel pump at the gas tank so I could see if the pump is activating/pumping when I turn the engine switch to on. Since I could never hear it anyway I thought I just had a bad pump. So I bought a new one. The new one works because I checked it by connecting it to the battery and saw it activate. The old one would not. I thought this would solve my problem, but it did not. So this jumper thing did not work for me either. No activation. If I try to start the engine, even if it's a quick engine turn, the pump will activate and I'll see a lot of gas shoot out from the pump. Yea, fuel lines disconected so I could see. Now I did a few different lengths of time trying to start the engine. It seems the fuel pump will keep pumping as long as the engine is turning but when I stop trying to start the engine the pump shuts off. I thought the pump is supposed to stay on to keep a constant pressure. Sooo... Any ideas? I'm stumpped and I'm tired of working on this car! I thought the engine rebuild and installation was the hard part. Oh yea, incase anybody is wondering, the car will start, but only for a couple seconds... fires up, revs to about 3000 rpms then just dies... A couple of pumps on the accelorator, restart and same thing...
11-25-11, 06:29 PM
#20
ok, changed fuel injectors? Are you saying you swaped your primary and secondary injectors like you had put them in the wrong locations? Or you bought new injectors? I'm having the same problems as james86 was. My RX-7 is a 89 N/A with an engine rebuild. I did the jumper connection like satch showed.. the pump did not activate. I did however hear a clicking noise coming from the engine area. I have disconnected the two fuel lines from the fuel pump at the gas tank so I could see if the pump is activating/pumping when I turn the engine switch to on. Since I could never hear it anyway I thought I just had a bad pump. So I bought a new one. The new one works because I checked it by connecting it to the battery and saw it activate. The old one would not. I thought this would solve my problem, but it did not. So this jumper thing did not work for me either. No activation. If I try to start the engine, even if it's a quick engine turn, the pump will activate and I'll see a lot of gas shoot out from the pump. Yea, fuel lines disconected so I could see. Now I did a few different lengths of time trying to start the engine. It seems the fuel pump will keep pumping as long as the engine is turning but when I stop trying to start the engine the pump shuts off. I thought the pump is supposed to stay on to keep a constant pressure. Sooo... Any ideas? I'm stumpped and I'm tired of working on this car! I thought the engine rebuild and installation was the hard part. Oh yea, incase anybody is wondering, the car will start, but only for a couple seconds... fires up, revs to about 3000 rpms then just dies... A couple of pumps on the accelorator, restart and same thing...
11-25-11, 06:44 PM
#22
Fuel pump only stays on with the key to start or w/the engine running in a normal situation. If you jumper the fuel check connector then it should run w/key to on.
Locate the Circuit Opening relay under the dash and just to the right of the steering wheel column (it's Black and Yellow). W/key to on the Black/White wire should have battery voltage on it. Does it? Also, check for voltage on the Black/Red wire with key to start and clutch depressed. Does it? If not then check the 15 amp Engine fuse in the interior fuse box. There is a solid Black wire in the relay plug which is a constant ground and could be used for the ground source necessary for the multimeter to provide a voltage reading.
Locate the Circuit Opening relay under the dash and just to the right of the steering wheel column (it's Black and Yellow). W/key to on the Black/White wire should have battery voltage on it. Does it? Also, check for voltage on the Black/Red wire with key to start and clutch depressed. Does it? If not then check the 15 amp Engine fuse in the interior fuse box. There is a solid Black wire in the relay plug which is a constant ground and could be used for the ground source necessary for the multimeter to provide a voltage reading.
11-25-11, 07:01 PM
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"Fuel pump only stays on with the key to start or w/the engine running in a normal situation." Yea, I understand that part. That's why I said, the pump will not come on when I turn the key to start/on. But the fuel pump will pump while I'm cranking the car. I have checked the fuses, in engine bay and under dash. All are good. I have not used a multimeter before, so not sure how that works, though I do have one. But what is AFM that Karack suggested and what about my original question to you about the fuel injectors? What did you do? Oh yea, my RX-7 is an automatic... Don't leave me broken on the side of the road satch... Need your help please?
Last edited by Poker Player; 11-25-11 at 07:05 PM. Reason: addition
11-25-11, 07:08 PM
#24
"Fuel pump only stays on with the key to start or w/the engine running in a normal situation." Yea, I understand that part. That's why I said, the pump will not come on when I turn the key to start/on. But the fuel pump will pump while I'm cranking the car. I have checked the fuses, in engine bay and under dash. All are good. I have not used a multimeter before, so not sure how that works, though I do have one. But what is AFM that Karack suggested and what about my original question to you about the fuel injectors? What did you do?
I am not the original poster so I did nothing to my injectors.
11-25-11, 07:18 PM
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Oh yea,,sorry that was James... you were helping him and got stuck with me.. lol. Ok,, I'll try the multimeter tomorrow. It's dark and cold outside. But so if it reads voltage, then what? Oh yea,,, What is AFM?????