1996 Chevy Express Cold Start up

Tiny
PJMCCARL
  • MEMBER
  • 1996 CHEVROLET EXPRESS
  • V8
  • 2WD
  • AUTOMATIC
  • 110,000 MILES
Having cold start issues that has increased overtime, suspected low fuel pressure, start up pressure seems to be around 55lbs, will hold pressure, seems to be normal leak down once it's started. Tune up has been done, and no codes have been set off. I have read conflicting thoughts on correct start up fuel pressure. Like to get your opinion on.

1. Correct start up fuel pressure?
2. Any thoughts on possible problems?
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Friday, August 20th, 2010 AT 12:37 PM

7 Replies

Tiny
WRENCHER1
  • MEMBER
What engine do you have?
Are you sure about the year? They didn't call it an Express in 96
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Friday, August 20th, 2010 AT 12:53 PM
Tiny
PJMCCARL
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Express 1500 van.

5.0 or 305
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Friday, August 20th, 2010 AT 2:20 PM
Tiny
WRENCHER1
  • MEMBER
FUEL PRESSURE SPECIFICATIONS
Ignition On, Engine Off
Central FI 415 - 455 kPa (60 - 66 psi)
SFI 385 - 430 kPa (56 - 62 psi)
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Friday, August 20th, 2010 AT 2:29 PM
Tiny
WRENCHER1
  • MEMBER
FUEL PRESSURE SPECIFICATIONS
Ignition On, Engine Off
Central FI 415 - 455 kPa (60 - 66 psi)
SFI 385 - 430 kPa (56 - 62 psi)

I would say your on the right track with fuel pressure. These things won't even run under 55PSI
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Friday, August 20th, 2010 AT 2:30 PM
Tiny
PJMCCARL
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I have a fuel gauge hook up all the time and have left overnite and start up pressure is 55, once started after 4 or 5 times of starter turnover and starts, it stays at 58-60. Is there a minimum pressure for this motor?
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Friday, August 20th, 2010 AT 2:55 PM
Tiny
WRENCHER1
  • MEMBER
Yes, the low end of the spec is the minimum. I know these systems have no tolerance for low pressure. Like I said, many of them won't even run under 55PSI.
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Friday, August 20th, 2010 AT 3:09 PM
Tiny
PJMCCARL
  • MEMBER
Thanks guys, I'll work it from there.
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Friday, August 20th, 2010 AT 4:20 PM

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