Tune-Up Specifications

Spark Plug Gap 0.041 in.
Ignition Timing

Fig. B:

Firing Order shown
Firing Order 1-2-3-4-5-6
Degrees BTDC [2]
Minimum Air Flow @ Idle 500 CFM @ 1100 RPM
Fuel Pump Pressure 47-51 PSI [3]
Valve Clearance [1]

BTDC Before Top Dead Center
[1] Equipped w/hydraulic valve adjusters. No adjustment is necessary.
[2] Controlled by Powertrain Control Module; not adjustable.
[3] Disconnect fuel rail wiring harness. Connect a jumper wire between 12 volt power source & A142 circuit terminal of fuel rail wiring harness connector. Connect one end of a jumper wire to ground, then connect other end of jumper