Help with fouled plugs

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HiTech6

Member
Joined
Jan 23, 2003
Messages
144
I need some help with my car as it will black the plugs in 100 miles or less. I just put in a fresh set and took a 120 mile ride and came back and plugs were jet black. Car seems to run good with no issues. I have tried Autolight 103 and 104 plugs as well as NGK-7's. I do have Champion Alum heads and these are the plugs they recommended. I do drive this car almost everyday and I go race about once a month. Thanks for any help.
 
Fouled plugs

Thanks for the reply. I just checked and at 70 MPH my A/F was 13.9. What do you feel it should be? Thanks again.
 
That's not much info there.


Were you at WOT, or just cruising?

Anyway, I guess 13.5-14.5 is normal for just putting around town. Depends on if you are going up hill or ??

Are you sure it's not from oil?
I have about the exact same build up by the way.
Just about identical, except I have a T70 from Cotton, and a 212-218 roller
 
Fouled plugs

Thanks again for the reply and yes my car is using oil. Plugs do not smell gassed just very sooty. I was just in my driveway when I checked the A/F a couple of min. ago.
 
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