1979 ALFA ROMEO ALFETTA

Typical onset: 50,000-80,000 mi

Symptoms: Severe clunking on throttle lift or engagement, Vibration through chassis at highway speeds, Visible sagging of rear transaxle assembly

Fix: The rubber transmission mount deteriorates from heat and age, allowing the transaxle to shift violently. Flex disc (guibo) between driveshaft sections cracks similarly. Replace both together—2.5-3.5 hours labor, requires rear axle support and alignment.

Estimated cost: $450-750

Symptoms: Hard cold starting or no-start conditions, Rough idle and hesitation under load, Fuel weeping from injection pump or lines, Black smoke and poor fuel economy

Fix: The mechanical Spica injection system is precision machinery requiring clean fuel and regular filter changes (every 10k). When neglected, internal pump wear and stuck metering components demand specialist rebuild or replacement. Pump rebuild runs 6-8 hours plus tuning; sourcing parts is difficult. Many owners convert to Weber carburetors instead (12-15 hours total).

Estimated cost: $1,800-3,500

Typical onset: 60,000-100,000 mi

Symptoms: Oil pooling under engine/transmission bellhousing area, Clutch contamination causing slip or chatter, Oil consumption requiring frequent top-ups

Fix: The rear main seal weeps as the rope-style seal hardens with age. Oil pan gasket cork deteriorates similarly. Rear main requires transmission removal (8-10 hours), so address clutch and pilot bearing simultaneously. Oil pan alone is 3-4 hours due to crossmember interference.

Estimated cost: $1,200-2,200

Typical onset: 100,000-150,000 mi

Symptoms: Metallic knocking on cold start that persists, Low oil pressure at idle when warm, Excessive blowby and crankcase pressure, Blue smoke on deceleration

Fix: The all-alloy twin-cam is robust but suffers from inadequate oil cooling and owners running incorrect viscosity oils. Main bearings and rod bearings wear, requiring crankshaft removal and machining. Full rebuild with bore honing, new pistons/rings, bearings, and head work runs 25-35 hours. Short block replacement is 18-22 hours.

Estimated cost: $4,500-7,500

Typical onset: 80,000-120,000 mi

Symptoms: Grinding or balking when shifting into second gear, Whining or growling in specific gears, Difficult engagement when cold, Gear oil leaks from transaxle seals

Fix: Second gear synchros wear first from aggressive shifting. The transaxle location makes removal easier than typical cars (3-4 hours out), but rebuild requires specialty knowledge of the de Dion rear suspension setup. Full rebuild including bearings and synchros is 12-15 hours total.

Estimated cost: $2,000-3,200

Typical onset: 60,000-90,000 mi

Symptoms: Rear axle steering or tramping over bumps, Clunking from rear suspension on direction changes, Uneven rear tire wear, Wandering highway tracking

Fix: The de Dion rear suspension uses rubber bushings at the tube ends and Watts linkage pivots that crack and deflect. Requires complete rear suspension disassembly to replace properly—8-10 hours labor. Alignment critical afterward or handling becomes dangerous.

Estimated cost: $800-1,400

Symptoms: Intermittent gauge failures or erratic readings, Headlights or turn signals cutting out, No-crank conditions despite good battery, Instrument cluster lights flickering

Fix: Lucas and Bosch components mixed with Italian wiring leads to chronic issues. Fusebox develops corrosion, grounds fail, and bullet connectors oxidize. Diagnosis is time-consuming (2-4 hours typical per issue). Full harness inspection and terminal cleaning recommended preventively—4-6 hours.

Estimated cost: $300-900