Spark plugs

1992 CHEVROLET
25,000 MILES • 4.3L • V6 • 2WD • MANUAL
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KALUB JOHNATHAN
  • MEMBER
  • 1 POST
Bought new spark plugs and my gaping is suppose to be .035, but when i go to adjust the gap its already .04. so my question is, how do i adjust the gap on my spark plug to make it smaller or will the bigger gap affect the way my engine runs?
Apr 21, 2017 at 11:27 PM
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SATURNTECH9
  • ✓Experienced Mechanic
  • 30,869 POSTS
They have spark plug gaping tools that have a small channel on them for bending the gap smaller or making it bigger. You use it to bend the gap right where it comes off the end of the spark end where the threads end.
Apr 22, 2017 at 5:05 AM
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JOHNNY G.JR
  • ✓Experienced Mechanic
  • 320 POSTS
A larger gap will overtax ignition system and decrease plug life and usually just will not fire.
Apr 22, 2017 at 11:03 AM
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SATURNTECH9
  • ✓Experienced Mechanic
  • 30,869 POSTS
I would set it at the correct gap as the plug wears the gap will increase anyways.
Apr 22, 2017 at 11:08 AM
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