What causes Crankshaft seal failure causing oil leaks on the Vespa Px 150?

Oil residue around engine casing and exhaust smoke Estimated fix cost: $150-$400

What causes Carburettor wear causing poor starting on the Vespa Px 150?

Cold start difficulty, rough idle, fuel smell Estimated fix cost: $50-$150

Stiff lever pull, uneven braking, cable fraying Estimated fix cost: $30-$80

Clunky shifts, neutral hard to find, slipping Estimated fix cost: $200-$500

Known issues to inspect before buying a used Vespa Px 150. What to check and how much repairs cost.

SERIOUS

Oil residue around engine casing and exhaust smoke

Fix cost: $150-$400

MODERATE

Cold start difficulty, rough idle, fuel smell

Fix cost: $50-$150

MODERATE

Stiff lever pull, uneven braking, cable fraying

Fix cost: $30-$80

SERIOUS

Clunky shifts, neutral hard to find, slipping

Fix cost: $200-$500

☐Check frame welds for cracks or repairs

☐Test all four gears under load

☐Inspect floor and legshield for rust

☐Verify engine number matches documents

Solid if maintained, expensive when neglected