Posted by 36 coupe on May 17, 2008 at 04:50:33 from (64.136.26.226):
In Reply to: Re: O/T a litte bit posted by chvet73 on May 16, 2008 at 22:46:25:
Once the fuel charge ignites it has to burn.A worn spark plug can fail to spark under pressure and the unburned fuel charge will go out the exhaust.This is the only way you can lose milage.Burn better, more complete burn are BS terms invented to sell tractor owners transitorized big buck ignitions.Gas and oil fouled plugs will fail to fire often.The spark voltage will run up the nose of the carboned insulator in a thin stream.That wont ignite the fuel charge.Testing suspect plugs on the bench with a Model T coil will prove this.I test ignition parts on the bench with a T coil.I used a T coil to test the spool type rotors on early Ford V8s for breakdown 50 years ago. Rotors can arc to distributor shafts.The 9N 2N 8N and later Ford tractors need a hotter plug with the gasoline we have now.Ill repeat, a spark plug has to fail to fire to affect gas milage.All the buzz words used to sell more plugs are BS.
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