1985 Ford Falcon 6 cyl Two Wheel Drive Automatic 120000 miles
I have a 1985 ford falcon with a 4.1 cross-flow straight 6, that blows smoke from the exhaust, heavier when cold. But even with the engine warmed up a tiny bit of smoke is still noticeable. Revving the engine will make it blow heavy smoke and then blow a little smoke after for a few seconds. I purchased the car after it had sat for 12 months. It has 200,000km/s (120,000 miles) and has been well maintained by its previous elderly owner. The car starts first go and runs smoothly. Also it is a carby motor.
Normal problems are valve stem seals in the cylinder head, also you should do a comp test wet & dry to check ring condition, also try doing a engine flush and use 20W-50 engine oil use a mineral oil as well see how that goes.