Quote:
Originally Posted by K10-Kansas
I have an EEC tank but I don't have 3 lines in the floor of the cab. I have 2. I have 1 fuel line and 1 vapor line. Does anyone know about these 3 lines?
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I believe the automatic trucks had three lines. Supply, return and the EEC vent. The manual trucks had two lines. Supply and EEC vent. Ive read somewhere the return line was to help with vapor lock issues.