CHEVY 2500

  • Tiny
  • david vander sluis
  • 1997 Chevrolet Custom Deluxe
  • 130,000 miles

No gas getting to engine. Only runs when pouring gas into throtle body. Has fuel at air chuck looking thing in fuel line. Help!

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Saturday, January 15th, 2011 AT 10:40 PM

4 Replies

  • Tiny
  • Wrenchtech
  • Expert
  • 20,241 posts

Test for spark at the plug end of the wire using a spark tester. If none found, check for power supply on the + terminal of the coil with the key on.

Test for injector pulse using a small bulb called a noid light. If none found, check for power supply at one side of the injector with the key on.

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Saturday, January 15th, 2011 AT 11:09 PM
  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,409 posts

You need to check fuel pump pressure to the fuel rail. On the rail is a schrader valve. That is where the pressure gauge connects to. If you look on our homepage under the DIY section, there is a video and directions for checking fuel pressure. Do that first. You will need a fuel pressure gauge to check it. Most parts stores will lend you the gauge.

If there is no pressure, chances are the fuel pump has gone bad. It is located in the fuel tank, and the tank needs removed to replace it. However, before just replacing it, make sure there is power to it to eliminate other potential issues such as a faulty fuel pump relay, ground, broken wire, or a bad connection.

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Saturday, January 15th, 2011 AT 11:12 PM
  • Tiny
  • david vander sluis
  • Member

What is voltage suposed to be going to fuel pump, is this on when the key is on?

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Sunday, January 16th, 2011 AT 12:12 AM
  • Tiny
  • Wrenchtech
  • Expert
  • 20,241 posts

You don't have to worry about that until you check the fuel pressure. The pump powers for 2 seconds when the key is turned on and then again after it sees a tach signal.

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Sunday, January 16th, 2011 AT 12:13 AM

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