I have measured resistance above 5k and determined the plug to be causing a problem. Typical resistance is 1-3 kOhm, sometimes less for a new one.
Pros: easy way to determine
Cons: resistance above 5k
Reviews of Champion spark plug
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186 votes
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Champions quiet redesign of their plugs to match Tempest made up my mind. It matters, and Champion is just trying to save face.
Pros: redesign to match Tempest
Cons: trying to save face
I always run champion platinum in the coil rail 4.0s. Sometimes engines are particular.
You can get the champion version of the RS7 plugs for less than $20 a plug and they’re working great on my car!
Pros: working great
These were actually alright spark plugs. The ceramic is a lot tougher than normal ceramic, and the electrode is larger. They were marketed as 'truck plugs', but they're really good in old tractors and farm equipment. They last forever.
Pros: tough ceramic, larger electrode
Cons: rest of plugs are shit
For spark, I wasn't sure I had the right plugs so I went with the OEM Champion plugs that were recommended in the Bentley. I checked for spark, no issues there.
Pros: no issues with spark
Vehicle:
Volkswagen Fox
Champion plugs are barely adequate for a lawnmower...
Cons: barely adequate
Champions are crap.
Cons: crap quality
Replace those plugs with nothing other than the Champion 7989 plugs. They are about $14 each and they are a 1 piece design.
Pros: one piece design
Vehicle:
Ford
Part number: 7989
I do know certain Toyota "sporty" cars run like crap on Champions.
Cons: run like crap
Vehicle:
Toyota
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