Question about 1992 Geo Tracker

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I just bought a 90 Tracker. non running. got it cheep and its in great shape. problem is fuel related. I have 70 PSI into the TB and out of the TB into the return line. the Injector is new today. seems to be pulsing. but no spray. I would assume that the relay is good. Maybe the pressure regulator?. dont wanna buy anymore un needed parts.Last owner said he was driving and it just shut off. never to run again. any ideas?

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  • Stephen Brisbois Jul 12, 2009

    Yes. I ohm'd the origional injector per the trouble shooting in my Haynes manual and it was outta spec so I bought a new one. I can feel the injector pulsing as I turn over the motor with a remote start button I rigged. no spray from the injector.

    Book says 25- 35 psi. I have 70. also 70 into the return line. That "regulator" seems to Vacume operated. I thought also about the throttle positioning sensor. Dunno. Mfg date was 8/89 but all the pics and check out procedures in my book apply to a 91 and up. any more ideas? Steve

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  • Geo Master
  • 2,984 Answers

First of all....if you have 70 psi of pressure, then you are flooding your motor and you won't get it to turn over.

Fuel pressure regulator.

Do you have a throttle body injected system or multi-port?

Posted on Jul 12, 2009

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  • Expert
  • 331 Answers

Can you feel the injectors. are they pulsing
when someone tries to start. you can put your hand on one and feel the clicking
of the open and close

Posted on Jul 11, 2009

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