Tune-Up Specifications

Spark Plug Gap 0.039-0.043 in
Ignition Timing
Firing Order 1-2-3-4-5-6

Fig. B:

Firing Order shown
Degrees BTDC [02]
Curb Idle [02] 650-850 RPM
Fuel Pump Pressure [03] 47-50 psi
Valve Clearance [01]

BTDC -- Before Top Dead Center
[01] -- Equipped w/hydraulic valve lash adjusters. No adjustment is necessary.
[02] -- Electronically controlled, not adjustable.
[03] -- At Curb Idle.