Installed new injectors, still didn't fix it?

Tiny
VILLAFUERTEJOSEPH85
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  • 3 POSTS
Numbers matched on computers never tried checking codes with jumper wire someone said it was easy to burn out or?
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Monday, June 1st, 2020 AT 1:43 PM (Merged)
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
With obd1, I've never had problems checking codes with jumper wire. Maybe there is always a first time, but, hasn't happened, yet. On older vehicles, I have seen mil lamp that didn't work for some reason. On those, I used a scanner to look at live engine data, see if anything looks out of kilter.

I'd have to check for injector pulse on the injector ground circuit, engine cranking. A noid lite will work. Also, if you have a digital multimeter that has a tach--duty cycle--dwell setting, I believe any of those will react to dc pulse. If the meter has a min/max setting, that should work.
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Monday, June 1st, 2020 AT 1:43 PM (Merged)
Tiny
DENISESAINZ
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  • 1 POST
  • 1988 CHEVROLET CHEYENNE
Engine Performance problem
1988 Chevy Cheyenne 6 cyl Automatic

What does it mean when one of the fuel injectors is leaking out fuel in to chamber? Does this mean I need to replace it?
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Monday, June 1st, 2020 AT 1:43 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Try cleaning it out-don't work replace it
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Monday, June 1st, 2020 AT 1:43 PM (Merged)
Tiny
BROKEDUDE
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  • 4 POSTS
Before you replace it, you want to check the o-ring underneath the injector.
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Monday, June 1st, 2020 AT 1:43 PM (Merged)

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