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Fuel Pressure

Tiny
LONNIE
  • MEMBER
  • 1995 CHEVROLET S-10
  • 4WD
  • AUTOMATIC
  • 100 MILES
My s-10 pickup wont start and I have spark. I checked my fuel pressure and at the motor I was only getting 10 pounds (not enough) so I replaced the fuel filter, fuel pump and the strainer on the bottom of pump. Still only 10 pounds of fuel pressure. I then took the box off and checked the pressure at the tank and still only 10 pounds. What can I do now to solve the problum? This is a 1995 s-10 4x4
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Sunday, January 9th, 2011 AT 7:06 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
What do you have -A TBI or CPI fuel injection system?

TBI: 9-14psi

CPI: 60-66psi
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Sunday, January 9th, 2011 AT 7:28 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Sometimes I tee-in the fuel pressure gage in place of the fuel filter. Usually when there is no schrader valve, if quick connect filter, a little more problem-matic. If you can, block the return line, see if pressure builds. I wouldn't let it build much over 60 psi. With the spider fuel system, pressure is usually around 60--66 psi. The fuel pressure regulator might be causing a problem.
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Sunday, January 9th, 2011 AT 7:38 PM

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