Fuel Pressure

1995 CHEVROLET S-10
100 MILES • 4WD • AUTOMATIC
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LONNIE
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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
Jan 9, 2011 at 7:06 PM
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RASMATAZ
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What do you have -A TBI or CPI fuel injection system?

TBI: 9-14psi

CPI: 60-66psi
Jan 9, 2011 at 7:28 PM
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JDL
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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.
Jan 9, 2011 at 7:38 PM
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