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Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars


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Old 02-21-2012, 01:40 PM   #1
Jasonx63
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SR wierd sr starting problem

I have searched and couldnt find to much.

I have an s13 black top 740denso injectors walbro pump z32 filter recently changed. I went out to my car last night and it didn't start so I pulled the fuel pump fuse and cranked until all my pressure was gone plugged the fuse back in and primed the pump and it fired right up and drove fine. I went to go get gas and it wouldnt start again so I unplugged the fuse and it bleed the fuel pressure put the fuse in and it fired and wouldn't start so I unplugged yhe fuse started it and while it was running off the pressure popped the fuse in it ran idled and boosted fine then this morning it started up and then I went to work and it did it again. Any clues would help thanks.
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Old 02-21-2012, 01:48 PM   #2
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hum ...maybe a stuck or FP bad relay?

leaky injector?

FPR?
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Old 02-21-2012, 01:53 PM   #3
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Just got an aeromotive fpr a doubt that's it because it holds pressure and when it runs I have solid afr readings
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Old 02-21-2012, 02:04 PM   #4
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try not bleeding it ,just take the fuse out and wait a min and stick it back in.

another thing to try ,prime the system but have a fuel pressure gauge on it and see if has leakage!
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Old 02-21-2012, 02:12 PM   #5
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Maybe you flooded it, that's what happens to me when I try to start my car w bad timing. The fuel won't light, then it floods, then when the timing is right it still wont start. Pull the fuel pump fuse and crank till it catches, then plug it back in and start it up.
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Old 02-21-2012, 02:17 PM   #6
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bad fuel pump circuit
my s13 did that till i rewired it
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Old 02-21-2012, 02:19 PM   #7
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I have a fuel pressure gauge its at 43psi and ill try both of those but I just timed it and made sure the other night.
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Old 02-21-2012, 02:20 PM   #8
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Quote:
Originally Posted by JDMRIDDAZ View Post
bad fuel pump circuit
my s13 did that till i rewired it
What do you mean circuit. As in the fuel pump wiring? My harness is a wiring specialties harness so I'm sure its not that.
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Old 02-22-2012, 05:07 PM   #9
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Bump for help
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Old 02-23-2012, 11:01 PM   #10
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Figured it out was the coolant temp sensor was unplugged for some reason.
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