lemon-mirror
:
Home
>>
GMC
>>
1985
>>
Forward Control 7.4 W, Standard
>>
Repair and Diagnosis
>>
Engine Performance
>>
Adjustment
>>
Tune-Up - V8
Tune-Up - V8
Expand All (for easy ctrl-f)
Collapse All
Identification
Engine Identification
Tune-Up Notes
Testing
Engine Compression
Spark Plugs
High Tension Wire Resistance
Adjustments
Valve Arrangement
5.0L & 5.7L
7.4L
Valve Clearance
Distributor
Ignition Timing
Hot (Slow) Idle Rpm - M4MC, M4ME, M4MED & M4MEF Carburetors
Curb Idle and Throttle Return Control (TRC)
Hot (Slow) Idle Rpm - E4ME Carburetor
Idle Speed Control (ISC)
Idle Load Compensator (ILC) (M4MC Carburetor Only)
Throttle Position Sensor (TPS)
Idle Mixture
Mixture Screw Plug Removal
Propane Enrichment Procedure Federal Light Duty Models Only
Best Idle Procedure
Heavy Duty Models Only
E4ME & E4MED Mixture Adjustment
Mixture Control Solenoid Plunger Travel
Idle Air Bleed Valve Adjustment
Adjusting Idle Mixture Needles
Automatic Choke
Cold (Fast) Idle Rpm
Ignition
Distributor
Specifications
Battery
Starter
Ignition Coil
Fuel Pump
Fuel Systems
Alternator
Alternator Regulator
Service Intervals
Belt Adjustment
Capacities