Petrol leak, traced to a failed seal on the petrol gauge sender unit.
Rear shocks.
Blocked carbs due to dirty fuel.
Rear susension bushes short lived but cheap.
Spring failed.
Great little car that all in cost me 16p a mile over 2 years and 60,000 miles. Sold to a friend who ran it until 127,000 miles with no problems except a rear wheel bearing, and it still did not use any oil at all. Wish I hadn't sold it.
Had an 89 Sportwagon 1.7 Green Cloverleaf - sold it for an Omega estate - I too wished I had just kept the money and just used it to keep the Alfa going. After the MOT garages had buggered about with the carbs to get it through an emissions test I always took it to a proper Alfa place to be re-tuned (such as AutoDelta), and when it came back it was a dream to drive. Never had to put a single drop of oil in between changes.