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Try not, Do or Do not
Join Date: Apr 2004
Location: Fallbrook, Ca. 92028
Posts: 14,261
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If the car you are inquiring about is an 84-89 Carrera, you can adjust the ECU for lower fuel quality. There is a rheostat on the side of the ECU (a yellow knob with a triangle slot ? memory is fading) that will retard the timing about 4 degrees. It's easy to change and can be reset to normal when the fuel quality is restored.
Cheers
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