Engine Running

VALVE COVER REMOVED
^ Start the engine and, while idling, check for proper operation of all parts. Check the following:

ROCKER ARM
^ Check for plugged oil in rocker arms (6564) or cylinder head (6049).
^ Check for proper overhead valve train lubrication.

If insufficient oiling is suspected, accelerate the engine to 1200 rpm at 100 rpm with the transmission in NEUTRAL and the engine at normal operating temperature. Oil should spurt from the rocker arm oil holes such that valve tips and rocker arms are well oiled and /or, with the valve covers (6582) off, oil splash may overshoot rocker arms. If oiling is insufficient for this to occur, check oil passages for blockage.

POSITIVE ROTATOR AND VALVE SPRING RETAINER KEYS
^ Check for proper operation of positive rotator.

VALVES AND CYLINDER HEAD
^ Check for plugged oil drain back holes.
^ Check for missing or damaged valve stem seals (6571) or guide mounted valve stem seals.
^ Check for plugged oil metering orifice in cylinder head oil reservoir.

If insufficient oiling is suspected, check oil passages for blockage, then accelerate the engine to 1200 rpm with the transmission in NEUTRAL and the engine at normal operating temperature. Oil should spurt from the rocker arm oil holes such that valve tips and rocker arms are well oiled. With the valve covers off some oil splash may overshoot rocker arms.