2004 Chevrolet Silverado 1500 Q&A

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

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. -
Answer 1
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. -
Comment 1
You can hear the pump priming -
Comment 2
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. -
Comment 3
Doesn't sound labored but does take longer than a second -
Comment 4
No reply, already been instructed as to how to fix! -
Comment 5
We are going to start on that in the morning. One more question do you know where the fuel pressure regulator is located? -
Answer 2
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. -
Comment 1
I was told my truck has a non-serviceable fuel filter. -
Comment 2
fuel pumps in general are not servicable. you have to have them replaced. -
Answer 3
the fuel pump is not working properly and the regulator inside is allowing the pressure to bleed off along with low pressure -
Comment 1
So can we just replace the regulator? -