Pages 8–12 (5 pages)

Idle System

From the 1973 Rochester 2G Carburetor Service Manual

Year
1973
Make
Rochester
Vehicle
Carburetors, Components and Systems
Type
Fuel & Emissions, Service Manual
Models
Rochester Model 2G two-barrel carburetor
Pages
54

Idle system cutaways showing the idle tube, idle passage, idle restriction, idle air bleeds, main metering jets, idle mixture needle, off-idle discharge ports and idle discharge hole. Some views add EGR timed vacuum ports, canister purge, and the bi-metal idle air compensator valve in two installation views.

What this section covers

  • Idle tube, passage and air bleeds
  • Idle mixture needle and discharge holes
  • Off-idle discharge ports
  • EGR timed vacuum ports
  • Canister purge and constant bleed
  • Idle air compensator (bi-metal valve)
Read from page 8
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