How many ohms should my spark plug wires be

Tiny
COOLOLDS85
  • MEMBER
  • 1989 BUICK REGAL
  • 2.8L
  • V6
  • 2WD
  • AUTOMATIC
  • 56,000 MILES
I am having rough idle issues and need to check the wires to make they are still good.
Thursday, May 9th, 2019 AT 9:44 PM

1 Reply

Tiny
JIS001
  • MECHANIC
  • 3,411 POSTS
For your vehicle here is what they have for specification.

1-15 in.. 3000/10,000 ohms
    15-25 in.. 4000/15,000 ohms
    25-35 in.. 6000/20,000 ohms
    OVER 35 in.. 8000/25,000 ohms

Also inspect insulation for any damage. Spray some water with a spray bottle as well around the wires to check for arching.
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Thursday, May 9th, 2019 AT 10:25 PM

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