1999 Chevy Suburban

Tiny
BOBJEWETT
  • MEMBER
  • 1999 CHEVROLET SUBURBAN
  • V8
  • 4WD
  • AUTOMATIC
  • 167,000 MILES
What stops the fuel injector from allowing fuel to go through them
Sunday, January 9th, 2011 AT 5:36 PM

2 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Voltage and ground, use a noid lite and check injector pulse, engine cranking. Check for voltage at injector key on. The computer controls injector ground circuit, on and off. If the computer doesn't see an rpm signal, no injector ground/pulse.
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Sunday, January 9th, 2011 AT 6:14 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
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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Sunday, January 9th, 2011 AT 6:15 PM

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