- Jul 3, 2004
- 116
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I just change my ngk tr 55 for tr6 with the tr 55 the plug was black brown but with the tr 6 i drove the car and recheck the plug and the plug are total white like milk what is that i know is because the car is lean but does i can damage the engine if im only cruising at low speed with the car on it s better that i dont drive the car until this is resolve and got my custom tune