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mackin1, Auto Tech
Category: Nissan
Satisfied Customers: 473
Experience:  Foreign/Domestic Vehicles
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720 pickup: auto trans, A/C..carb, you can smell the rich exaughst

Resolved Question:

i have a 1984 nissan (datsun) 720 pickup, 2.4 liter motor, auto trans, A/C . need to know how to readjust the carb, you can smell the rich exaughst
Submitted: 9 years ago.
Category: Nissan
Expert:  mackin1 replied 9 years ago.

Hi ther and welcome to JA

If its for sure its a carb-at the drivers side pop the cap off the A/F mixture screw- turn A/F mix screw till it seats back it out 2 turns set idle screw curb adjustment at 650rpm-now start closing the mixture screw till you feel its misfiring then back it out qtr turn, then readjust curb idle to 650rpm. Might want to inspect the choke system -choke plate could be binding not opening fully creating the rich mixture.

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