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Fuel Injector Spray Pattern

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 1990k5fan, Mar 13, 2007.

  1. 1990k5fan

    1990k5fan 1/2 ton status

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    I've been searching for the last two days on how to check the injector spray pattern. I've come up with taking it to a shop, what the cleaning does, what the injector spray is supposed to look like but I can not find what to check for the spray pattern.

    Can someone provide some assistance? I've searched all over here and google but no luck :/

    Thanks.
     
  2. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    All you need to do is look at the injectors while the truck is running and you can see how they are spraying. If you have a timing light that makes it even easier to see the pattern. Basically you want a nice conical pattern with no drips. Both the injectors should have the same spray pattern as well.
     
  3. 1990k5fan

    1990k5fan 1/2 ton status

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    Not to sound stupid or anything but where exactly are the fuel injectors for me to check :[ :o. I don't have a timing light so I'm going to have to check it by hand.
     
  4. Jason4x4

    Jason4x4 1/2 ton status

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    under the air cleaner, pull the top off, and there are two plugs there, one for each injector.
     

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