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Suburban C2500, 7.4 J
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Engine Performance System Adjustments - 7.4L
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
Engine Performance System Adjustments - 7.4L
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Model Identification
Engine Mechanical
Valve Clearance
Ignition Timing
Notes
Camshaft Retard Offset
Notes
Checking Retard Offset
Adjusting Retard Offset
Idle Speed & Mixture
Idle Speed & Mixture
Notes
Controlled Idle Speed Check
Throttle Position (TP) Sensor