Spark Plug Diagnosis
12-10-01, 09:30 PM
#1
Senior Member
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Spark Plug Diagnosis
Anyone care to take a look at these and tell me if there is anything to be worried about. They came of my 93 w/ 60K miles on it, this is the first time I've changed them and I have no idea when the previous owner last did them. Left to right they are L1, T1, L2, T2. TIA.
12-11-01, 10:10 AM
#3
hey, your car is on fire!
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er im confused. you say black is rich, but im running intake, dp, and catback with the stock ecu and mine are always black with a little brown, I got a pettit ecu in the mail... also the car likes to do small backfires between shifts and bigger ones if i let off the throttle over 5k rpm. im still running the stock clogged *** cat until I get my ecu.
12-11-01, 11:39 AM
#5
Pimpin Rotors...and Hoes
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Looks like two of them have a little whitish color around them Good thing you got that Pettit ECU. I was running the same setup before I got my G-Force unlimited ECU and my plugs had whitish on it just like yours. Now they are black and brown. 
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