What's the purpose of the smog pump on a 1973 Buick Centurion ?


Asked by Aug 22, 2016 at 02:07 PM about the 1973 Buick LeSabre

Question type: Maintenance & Repair

What happens when I disable the smog pump by removing the drive belt ?

1 Answer


Not much, way back in 1973 this was just a band aid approach to try and reduce emission by "injecting" air into the heads or exhaust manifolds (into the the exhaust stream) basically useless I've checked these with a emissions analyzer. Maintaining a sharp tune does far more the an a belt driven air pump ever could.

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