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1972 Chevrolet C20 Pickup 5.7L Excessive Emissions
Posted to GM Driveability on 7/5/2019 44 Replies

The Problem is excessive HC at idle. Everything else is okay. There is no catalytic converter. We have set the carburetor idle jet screws to 2 turns out, from 3 turns out. The engine compartment is very clean and easy to work on also. The spark plug wires ...

44 Replies Received (View Replies)

  Related Documents & Media  1972 Chevrolet C20 Pickup

 
Message Closed w/FIX

car Vehicle Data

1972 Chevrolet C20 Pickup

VIN CCE342Z157
Engine5.7 L / 8 cyl / GAS
DeliveryCarburetion / 4 bbl, HEI distributor
SymptomsExcessive Emissions
OccursHot
Message Closed w/FIX

car Vehicle Data

1972 Chevrolet C20 Pickup

VIN CCE342Z157
Engine5.7 L / 8 cyl / GAS
DeliveryCarburetion / 4 bbl, HEI distributor
SymptomsExcessive Emissions
OccursHot