1990 Nissan Truck Engine won't start

Tiny
ROYCOE
  • MEMBER
  • 1990 NISSAN TRUCK
  • 4 CYL
  • 2WD
  • MANUAL
  • 150,000 MILES
Fuel 60 psi, plugs has plenty spark, injectors has pulse power, fuel to the injectors no fuel out. Put fuel in trottlebody, engine starts imediately. Need help!

updated 9-28-09
Replaced fuel injectors in the 1990 Nissan truck and it will not start--any other suggestions?
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Thursday, September 24th, 2009 AT 6:17 AM

6 Replies

Tiny
KHLOW2008
  • EXPERT
Hi roycoe,

Thank you for the donation.

Seems the injectors are not working. Did you test the iinjectors resistance and test them by applying battery voltage to see if they works?
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Thursday, September 24th, 2009 AT 11:32 AM
Tiny
YAH1
  • MEMBER
My Injectors Will Work Fine If I Ground Out The Injector At The Battery & Use The Fuel Injector Connector Power, But If I Put The Fuel Injector Connector Back On It's Like The Engine Control Module Wont Send The Signal To The Injectors.

Thanks
Jeffrey
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Sunday, September 27th, 2009 AT 10:36 PM
Tiny
YAH1
  • MEMBER
I Have The Same Exact Problem

The Subject Heading Did Not Show Up On The Previous Post.

I Basically Have The Same Nissan

Please, Answer My Previous Post.

Thanks
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Sunday, September 27th, 2009 AT 10:43 PM
Tiny
KHLOW2008
  • EXPERT
If you have power to he injectors and the PCM is not grounding the circuit to fire the injectors, you would have to test the PCM and it power and ground circuit.

Most probably the PCM is faulty.
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Monday, September 28th, 2009 AT 10:40 AM
Tiny
YAH1
  • MEMBER
Thanks For The Reply,

The Computer Showed To Be Grounded On My Analog Ohm Meter, For Engine & Body Ground To The Computer & The Computer Was Receiving Power
On Pin 46 Like All Data Says, But I Found That When I Left The Positive Terminal Off Of The Battery Overnight & Put It Back On In The Morning The Injectors Sprayed Fine. Maybe It Just Reset The Computer I Do't Know.

My Positive Battery Conector Was Messed Up, But The Engine Turned Over Fine, But I Replaced Both Neg & Pos Conectors & It Seems To Work Fine So Far.
Thank You
Jeffrey
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Tuesday, September 29th, 2009 AT 11:36 PM
Tiny
KHLOW2008
  • EXPERT
Glad that you have solved your problem.

A bad ground is similar to a faulty circuit so can cause a lot of complications.
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Wednesday, September 30th, 2009 AT 10:56 AM

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