In this video I will walk you through some basic tests on verifying spark, injector pulse and fuel pressure. All you need is a digital multimeter and a small pocket screwdriver. I will be using the Power Probe IV but this is not a necessary tool to handle this problem.

In this video I will show you how to test for spark on a GM type two waste spark system. How to test for proper fuel injector control and how to test fuel pressure and the fuel pump electrical system.

This video covers the basics of fuel pump pressure, current, power and ground testing that can be applied to ANY electric fuel pump.

1999 Ford Ranger with low power and lean exhaust codes (P0171 and P0174).

The vehicle being tested is a 1999 Chevy Suburban with no fuel pressure.

  1. Ford Electronic Returnless Fuel System Diagnosis (Part 1)
  2. How to identify a leaking fuel pressure regulator on a GM CPI system (part 2)
  3. How to identify a leaking fuel pressure regulator on a GM CPI system (part 1)
  4. Low fuel pressure causing a P0171 and P0174 trouble code