Valve Arrangement

WARNING: This page is about a different car, the 1988 Chevrolet Sprint. However, it is still accessible from the selected car via links, so may be relevant.

Rear of Vehicle - Intake Valves.
Front of Vehicle - Exhaust Valves.

Remove rocker arm cover. Rotate crankshaft clockwise and align timing notch on crankshaft pulley with "0" mark on timing tab. Remove distributor cap and ensure rotor is at 3 o'clock position. This position indicates engine is at compression stroke, TDC No. 1 cylinder. See Fig 1.

Using a feeler gauge between rocker arm and valve stem, check intake and exhaust valve clearance on cylinder No. 1. After adjustment, tighten lock nut.

Fig 1: Adjusting Valve Clearance

Courtesy of GENERAL MOTORS CORP.

VALVE LASH CLEARANCE

Application		In. (mm)
Intake
Cold		.005-.007 (.13-.18)
Hot		.009-.011 (.23-.28)
Exhaust
Cold		.007-.009 (.18-.23)
Hot		.011-.013 (.28-.32)

Rotate crankshaft an additional 240 degrees clockwise and align timing notch on pulley with lower left attaching bolt of timing belt outer cover. Check valve clearance for cylinder No. 3.
Rotate an additional 240 degrees clockwise from left attaching bolt and align timing notch with lower right attaching bolt. Check valve clearance for cylinder No. 2. Install distributor cap, rocker arm cover and air cleaner.