SR Not Starting :(

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Nismo_Freak
Posts: 10314
Joined: Wed Jul 24, 2002 10:42 pm
Car: 89 Nissan 240SX

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Ok, this is where I stand:

Car does not start

Plugs are dryPlugs are sparkingInjectors seem to not be getting signal as they are not clickingFuel pump is hardwired and runs when ignition is on.Tried two seperate ECUs... a 62 and an E5.Pulse tester (using Bosch plug) netted no voltage to injector plugsGrounds for injector harness are all plug in and good

Open to ideas... I'm a bit stumped, gonna check a few things tomorrow.


Nismo_Freak
Posts: 10314
Joined: Wed Jul 24, 2002 10:42 pm
Car: 89 Nissan 240SX

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Ok, I have a 96 S14. Engine is from a S13 and is a redtop SR20DET. I am not getting fuel to the cylinders.

What I know...

- ECU has power- Ignition has power and is sparking- CAS is working (assuming this due to ignition spark)- Fuel pump is hardwired and turns on when Ign. switch = "On" - Fuel pump is coming on- Fuel lines are installed correctly- Fuel pressure is building- Fuel pressure regulator seems to be working properly- Harness grounds (two grounds) nearest fuel injector plugs are grounding properly and are tied into the same grounding point - Wired acessories all work (wipers work)- White/Black wire that is grounded has a good ground (shared with interior main ground)- Plugs are dry- ECU code - 55 - All Clear- I can smell fuel after cranking the car

What I don't know... - Why the fuel injectors are not firing- Where fuel smell is coming from (cannot locate any liquid fuel anywhere)

I plugged in a pulse meter into the fuel injector plug and it did not illuminate at all. Which tells me I have no voltage at the plug.

Plan to test resistance between ECU pinouts and harness tomorrow.

Any suggestions or insight anyone can give me?

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Hijacker
Posts: 14373
Joined: Wed Aug 13, 2003 4:57 am
Car: '92 240sx Convertible
'94 F-150
Location: Fredericksburg, VA

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the only thing i can think of is a bad ECU. It happens. See if you can't net an ECU to test with

Nismo_Freak
Posts: 10314
Joined: Wed Jul 24, 2002 10:42 pm
Car: 89 Nissan 240SX

Post

I tried with another ECU.

User avatar
Hijacker
Posts: 14373
Joined: Wed Aug 13, 2003 4:57 am
Car: '92 240sx Convertible
'94 F-150
Location: Fredericksburg, VA

Post

ok. i am officially stumped then.

the fuel problem though. are you sure it's not flooding the cylinders? the plugs aren't wet after you try to crank it?

180fan
Posts: 7799
Joined: Sat Dec 14, 2002 12:16 pm
Car: 89 fastback

Post

the fuel smell without wetness around the engine bay shouldn't be keeping your car from firing. The only other thing I can think of is your harness properly wired and are the connections still connected?

DGA
Posts: 160
Joined: Wed Jan 28, 2004 8:14 am
Car: Cars

Post

Are you getting any power for the injectors at the ECU?Have you checked the injector impedance values? I highly doubt that you have 4 dead injectors, but its a possibility.


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