Quote:
Originally Posted by mtnbikeman
I believe that the vent on the driver door jamb was related to the EEC system. For those that have the vent were your trucks originally EEC style fuel systems? Its just a thought. I was reading through my service manual and found some where that what what the vent was for. I have an early 72, with the vent and believe that the mid to late 71's was when the EEC was put into production. Please correct me if im wrong.
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Sounds plausible but what would it do? And only 1/2 tons had EEC so I doubt it.
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