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fuel injection prob.

Discussion in 'The Garage' started by blazinjimmy, Apr 13, 2006.

  1. blazinjimmy

    blazinjimmy Registered Member

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    I bought a 1990 full size jimmy....parts truck. Seems you have to prime the motor to start it..even then it wont stay running. Its a 305. I know nothing about fuel injection.......so any help appreciated.
     
  2. 1985_K5_Silverado

    1985_K5_Silverado 1/2 ton status

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    Check engine light on? Is the ECM tossing out any trouble codes?
     
  3. sled_dog

    sled_dog 1 ton status

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    uhh its not getting fuel.... fuel pump pumping? fuel filter clogged? fuel pump relay even there?
     
  4. chevyk2500hd

    chevyk2500hd 1/2 ton status

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    It shouldn't be a 305 i think you meant 350. Also when you crank it over is there any fuel comming out the injectors. Maybe they are clogged if it has been sitting for a long time. Also something else clogging fuel supply may be causing low fuel pressure.
     
  5. blazinjimmy

    blazinjimmy Registered Member

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    Sled Dog....Uuuhh......I figured it's not gettin fuel. The guy drove it over...so it does run. I put new filter on and the pump is pumping. [like I said..not familiar with fuel inj., so I'm assuming the prob. is at the injectors-it has been siting for some time]
     
  6. sled_dog

    sled_dog 1 ton status

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    are they spraying? take the air filter and housing off. You will be able to see the injectors, have someone crank it, you will see the injectors spray fuel. Or you should see them do so.
     
  7. blazinjimmy

    blazinjimmy Registered Member

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    Thanks for all the info.....here's where I'm at; pump is working, new filter...and there is no spray at the injectors. [truck was running prior]
     
  8. Dr. Morgenstern

    Dr. Morgenstern Registered Member

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    Filter in the correct direction?
     
  9. chiggly626

    chiggly626 Newbie

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    One other thing to check is the little module in the distibutor that tells the injectors to fire. Mine went out in my 92 and I would have swore the fuel pump was bad.
     

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