RB25 Not starting. Help?

Discuss the RB20, RB25 and RB26 series engines.
MATTs14
Posts: 439
Joined: Thu Jun 28, 2007 8:13 pm
Car: Red 1995 Nissan 240sx

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Ok i go to start my freshly swapped rb25 and it turns over and everything but will not start. I check for spark and I have nothing. I have yet to check for injector pulse but the plugs were dry so i assume there is nothing there either.

I began diagnosing by plugging in the ignitor and testing to see if there is any current going through the ignitor. I take the ignitor off, crank the car, and there is current on the plug before the ignitor. Once again, i plug it in and try the same test and nothing on the output. Anybody have any ideas? Thanks ahead of time!


Joe
Posts: 6511
Joined: Sun Feb 09, 2003 8:29 pm
Location: Phoenix, AZ

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who wired it?

series 1 or series 2?

MATTs14
Posts: 439
Joined: Thu Jun 28, 2007 8:13 pm
Car: Red 1995 Nissan 240sx

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I wired it and followed the rb25 series 1 into S14 writeup found on the RBforums web page.

Also its a series 1.

Joe
Posts: 6511
Joined: Sun Feb 09, 2003 8:29 pm
Location: Phoenix, AZ

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doublecheck your injector control wiring

MATTs14
Posts: 439
Joined: Thu Jun 28, 2007 8:13 pm
Car: Red 1995 Nissan 240sx

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I got the injectors working and tested the CAS and both are good. I get power up to the ignitor but when i put a test light on the other side of the ignitor i get nothing. Any ideas??

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Carl H
Posts: 5985
Joined: Mon Aug 04, 2003 4:09 am
Car: 1995 Nissan 240SX SE RB30DET

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bad ignitor?

MATTs14
Posts: 439
Joined: Thu Jun 28, 2007 8:13 pm
Car: Red 1995 Nissan 240sx

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I also thought the main power wire (thick white) going to each coil was supposed to have constant power when the key was on. I also check the blue ignition relay with the thick black and red wire and the black and red has constant power when the key is on but its not distributing power to the coils.

I'm stuck on this one. Was able to get all my other swaps running but this one is beyond me.

MATTs14
Posts: 439
Joined: Thu Jun 28, 2007 8:13 pm
Car: Red 1995 Nissan 240sx

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Anybody??

MATTs14
Posts: 439
Joined: Thu Jun 28, 2007 8:13 pm
Car: Red 1995 Nissan 240sx

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Come on theres nobody that can help??

I did some testing and i took the igniter off and bypassed it by taking some wire and sticking it in each plug and found the corresponding coil and figured out that i was getting power to the white power wire in the middle. I seriously have no idea.

I also checked the relay with the black and red power wire and its the only one with power when the key is on to that particular relay.


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