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I have a 74-77 Spider or Brava. Whats with the air pump?

April 26, 2017air brava pump Spider

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I have a 74-77 Spider or Brava. Whats with the air pump?

1 Answer

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Emissions stuff… It sucks. Fiat didn’t think to put the air pump on the intake side of the motor, so they put it on the passenger’s side. Since the alternator was already there, they decided to run the air pump off of the exhaust cam belt. This can cause major problems- if the air pump seizes, then the cogged belt that drives it will also stop spinning. This will make the exhaust cam stop spinning, which will cause major engine problems when the pistons smash into the exhaust valves. In ’78, Fiat moved the air pump location to where the alternator was, and put the alternator on the intake side of the motor. They connected the air pump to the crank pulley, like it should have been all along.