Ford CSG-649 — Valve Clearance Adjustment (1978 and Prior)
Adjustments · valve mechanism
For the Ford CSG-649, from the Ford service manual.
Applies to: Ford CSG-649
Procedure
- Install auxiliary starter switch; crank engine with ignition OFF.
- Mark crankshaft damper in three equal 120-degree parts.
- Rotate crankshaft until No. 1 piston on TDC compression stroke.
- Loosen rocker arm stud nut to give push rod end clearance.
- Tighten nut to just remove push rod to rocker arm clearance.
- Tighten nut an additional turn into hydraulic lifter range.
- Repeat for remaining valves in firing order sequence 1-5-3-6-2-4.
Tools required
- auxiliary starter switch Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Firing order 1-5-3-6-2-4
- Valve adjustment requires two complete crankshaft turns
Full service-parts list: Ford CSG-649 →
Source: Ford service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.