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2004 Chevrolet Silverado 1500 Question: Results of my Fuel Pressure Test-2004 Chevy Silverado-I was told to post my resu

 

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kimkingtaylor, 5.3L V8, Houston, TX, March 19, 2013, 22:12
 Rookie

lts and maybe somebody could figure out why I have been having all these starting problems for so long.

-Key turned to "ON" position-no pressure
-1st crank-no start
-2nd crank-starts hesitantly and chugs until pressure is built.

This test was run on a cold engine.

3 Answers
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  • Answer #1

    arturo08 March 19, 2013, 22:56
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     Master

    failing fuel pump possibly. your fuel pump should build pressure as soon as you turn the key. doesn't sound like it is priming the line properly. manual test is turn key and stop before cranking. should be able to hear the pump priming the line. short whirring sound.

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    kimkingtaylor, March 19, 2013, 22:59
     Rookie

    You can hear the pump priming

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    arturo08, March 19, 2013, 23:46
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     Master

    if it takes time to build pressure, is a symptom fuel pump failing. does it sound strong or like it's laboured. should take no longer than a second to prime than it stops.

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    kimkingtaylor, March 20, 2013, 00:16
     Rookie

    Doesn't sound labored but does take longer than a second

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    pushrod, March 20, 2013, 01:10
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     Master

    No reply, already been instructed as to how to fix!

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    kimkingtaylor, March 20, 2013, 01:36
     Rookie

    We are going to start on that in the morning. One more question do you know where the fuel pressure regulator is located?

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  • Answer #2

    Miles Auto Services (884 Answers) , Richmond, VA - (804) 885-4176
    milesauto March 20, 2013, 05:19
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     Master

    Check for restricted fuel filter. Replace filter...rerun test. If it does not show pressure with key on then likely the fuel pump assy. will likely need to be replaced.

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    kimkingtaylor, March 20, 2013, 22:00
     Rookie

    I was told my truck has a non-serviceable fuel filter.

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    arturo08, March 20, 2013, 22:54
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     Master

    fuel pumps in general are not servicable. you have to have them replaced.

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  • Answer #3

    Greg's Orange Auto (13428 Answers) , Orange, CA - (714) 361-9386
    globalhelper March 20, 2013, 06:05
     Master

    the fuel pump is not working properly and the regulator inside is allowing the pressure to bleed off along with low pressure

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    kimkingtaylor, March 21, 2013, 00:34
     Rookie

    So can we just replace the regulator?

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