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Home >> GMC >> 1981 >> Magnavan Standard Trans >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Tune-Up - V8 >> Cold (Fast) Idle Rpm >> Notes

Cold (Fast) Idle Rpm: Notes

  1. Place transmission in neutral. Move cam follower onto highest step of fast idle cam. Disconnect and plug vacuum hose to EGR valve.
  2. Start engine without touching throttle. Turn fast idle speed screw to adjust speed to specifications.