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Lazy Fuel Injectors

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by xdelirious45x, Apr 30, 2004.

  1. xdelirious45x

    xdelirious45x Registered Member

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    On idle, my 88 chevy blazer TBI goes down to about 200rpms almost stalls and tries boosting back up to about 400rpms. I too apart the fuel meter cover to see if maybe the fuel pressure regulator was bad. It did not help. I tries cleaning all the fuel ports inside the tbi. The truck is electronically fuel injected. On idle, there is not a series of sprays of fuel from the fuel injectors. They both drip. Could this be a bad signal from the ECM? or Are these lazy fuel injectors?
     
  2. xdelirious45x

    xdelirious45x Registered Member

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    On idle, my 88 chevy blazer TBI goes down to about 200rpms almost stalls and tries boosting back up to about 400rpms. I too apart the fuel meter cover to see if maybe the fuel pressure regulator was bad. It did not help. I tries cleaning all the fuel ports inside the tbi. The truck is electronically fuel injected. On idle, there is not a series of sprays of fuel from the fuel injectors. They both drip. Could this be a bad signal from the ECM? or Are these lazy fuel injectors?

    Also, what are the biggest size tires i can put on a 4" lift/ 6" lift?

    Thanks! Keep Blazin!
    /forums/images/graemlins/k5.gif
     
  3. 1-ton

    1-ton 1/2 ton status Premium Member

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    You probably need to replace the fuel injectors. You can either replace them with rebuilt ones or new ones. Rebuilt fuel injectors can be a bit of a gamble...most times they work properly, but sometimes they do not. Rebuilt TBI injectors usually go for about $50 each, and new TBI injectors go for about $100 each.

    My TBI injected truck is having the same problem right now too, but not as bad as yours...YET! I am going to take a chance on rebuilt injectors for my truck. Autozone has them for $46 dollars a piece + core.
     
  4. xdelirious45x

    xdelirious45x Registered Member

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    Hey,
    Luckily my friend works at a GM dealership and actually has a spare set lying around. I hope these are OK. I'm probably going to changed them tomorrow. I'll keep you updated.

    Thanks!
     

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