For lower intake air temperature, the air inlet duct received air from outside the under bonnet area.
If this occurred, the cam sprocket needed to be replaced.
Pressed by hydraulic pressure from the oil pump, the detent oil passage would become blocked so that it did not operate.
The triple ground electrode type iridium-tipped spark plugs had 60,000 mile 96,000 km maintenance intervals.
Intake and throttle The intake system for the and included a 'sound creator', damper and a thin rubber tube to transmit intake pulsations to the cabin.
When the engine was stopped, the spool valve was put into an intermediate locking position on the intake side by spring power, and maximum advance state on the exhaust side, to prepare for the next activation.