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ZUKIWORLD Discussion Forum => Suzuki 4x4 Forum => Topic started by: piggy on May 22, 2006, 12:19:26 PM

Title: Fuel delivery problem
Post by: piggy on May 22, 2006, 12:19:26 PM

Just bought a project vehicle (91 Suzuki Sidekick JLX) Fuel pump was hooped so I put a new one in. It gets fuel to the injector but no further. I stuck the injector in my runnimg tracker and it works fine. Vehicle was running fine till the fuel pump packed it in --- then it sat for 3 or 4 years. Any ideas?  Could it be the computer? Pour gas in the carb and it will run fine. By the way this vehicle is EFI (throttle body).

Title: Re: Fuel delivery problem
Post by: Yoak on May 22, 2006, 02:51:54 PM

Have you checked the fuel line....maybe is clogged or damaged?

Title: Re: Fuel delivery problem
Post by: piggy on May 22, 2006, 09:04:18 PM

Like I said I get fuel to the injector but no further. Either I don't have enough fuel pressure which the specs say I need 40 lbs. or more to open the injector or the computer is not sending a pulse to the injector. Since I just put a new fuel pump in I don't think the pressure problem is an issue.

Title: Re: Fuel delivery problem
Post by: LilRed on May 22, 2006, 09:18:10 PM

   Check engine light on?  Any relays clicking?

Title: Re: Fuel delivery problem
Post by: piggy on May 22, 2006, 11:46:52 PM

check engine lite is on.  can't hear any relays clicking

Title: Re: Fuel delivery problem
Post by: ppltrak on May 23, 2006, 09:29:58 AM

Put  your test light accross the inj. conn and crank the eng. If it blinks the ecu and harness are OK. If it doesn't blink then you have to find out if you have pwr. to the feed side of the inj. harness if you have pwr. then it's on the grnd. side or the ecu.

     Kevin

Title: Re: Fuel delivery problem
Post by: Digger on May 23, 2006, 08:53:23 PM

Quote from: ppltrak on May 23, 2006, 09:29:58 AM

Put  your test light accross the inj. conn and crank the eng. If it blinks the ecu and harness are OK. If it doesn't blink then you have to find out if you have pwr. to the feed side of the inj. harness if you have pwr. then it's on the grnd. side or the ecu.

     Kevin

That would be the most likely way to figure it out and narrow it down. I would almost be willing to bet on a faulty ECM, though...

Title: Re: Fuel delivery problem
Post by: Rhinoman on May 24, 2006, 04:54:06 AM

Quote from: piggy on May 22, 2006, 11:46:52 PM

check engine lite is on.  can't hear any relays clicking

Pull codes.