[Greg in Oz]

Not much to tune

There is not much to tune-up. Idle speed and ignition timing are controlled electronically. Basic mixture setting is adjustable (only with correct measuring equipment) and the precise mixture control is done electronically relative to the feedback from the oxygen sensor in the exhaust system. So long as everything (including plugs, HT wires, distributor rotor and cap) is in good working order and filters are clean, all should be fine. If anything is not right (eg. idle speed) then there must be a fault which should be diagnosed and corrected.

 

[Greg in Oz]

Correct idle speed is about 750. My Aussie delivery has it shown on an emissions informati...

Correct idle speed is about 750. My Aussie delivery has it shown on an emissions information label in the engine bay. The fast idle at a cold start is perfectly normal.

 

[Greg in Oz]

Slight vibrations at idle are common and no cause for concern. Factors such as worn engine...

Slight vibrations at idle are common and no cause for concern. Factors such as worn engine mounts, injectors and ignition components can make matters worse. Ageing fuel and ignition components can also make for difficult or rough starts. Having said that, I have also known of low mileage examples in good condition that don't start perfectly. The rattle at start-up could be timing chain. Ticking at start-up is valve lifters. The scream is due to the belt slipping. Check the condition of the belt and tensioner. Tensioners are known to fail causing the belt to slip.