1968 ALFA ROMEO GIULIA

Typical onset: 80,000-120,000 mi (or unknown history)

Symptoms: Low oil pressure at idle, especially when hot, Blue smoke on deceleration or startup, Excessive blow-by from crankcase breather, Rattling or knocking from lower end under load

Fix: These engines were not designed for modern oil change intervals and many have lived hard lives. Main and rod bearings wear, piston rings glaze or break, and valve guides wear into oblivion. A proper rebuild with machine work, new pistons, rings, bearings, guides, and valve job runs 60-80 hours labor if you pull and reinstall the engine yourself, or 80-100 hours for full engine-out service at a shop familiar with Alfas. Many owners opt for a long block exchange to save time.

Estimated cost: $6,500-12,000

Typical onset: n/a - age and rubber degradation

Symptoms: Excessive shifter vibration and movement, Clunking when engaging clutch or shifting, Difficulty finding gears, especially reverse, Transmission tail visibly sagging

Fix: Original rubber mounts disintegrate after 50+ years, allowing the transmission to move excessively and misaligning the shift linkage. Replacement involves supporting the transmission, unbolting the old mount, and installing a new or rebuilt unit. Takes 2-3 hours if you have access and the exhaust isn't seized. Often done alongside clutch work.

Estimated cost: $250-500

Typical onset: 100,000+ mi or abused shifting

Symptoms: Grinding into second or third gear, Difficulty downshifting without double-clutching, Popping out of gear under load, Gear oil leaking from input shaft seal or tail housing

Fix: The five-speed gearbox is generally robust but synchros wear, especially second gear. A full rebuild includes new synchro rings, bearings, seals, and sometimes gears if teeth are damaged. Expect 12-16 hours labor for removal, rebuild, and reinstallation. Some shops send the gearbox out to a specialist, adding turnaround time.

Estimated cost: $2,200-3,800

Typical onset: n/a - age and storage conditions

Symptoms: Hard starting or long cranking before firing, Stumbling, hesitation, or cutting out under acceleration, Fuel smell in cabin or visible leaks at lines, Rust particles in fuel filter or sediment in carb bowls

Fix: Old gas, rusted tanks, deteriorated rubber fuel lines, and clogged filters are epidemic on cars that sat. Proper fix involves dropping and cleaning or replacing the tank, new fuel lines throughout, fresh filter, and carburetor rebuild (Weber 40 DCOE or Solex typically). Takes 8-12 hours to do it right, plus carb tuning time.

Estimated cost: $1,200-2,500

Typical onset: every 10,000-15,000 mi or as needed

Symptoms: Loud ticking or clattering from cylinder head at idle, Loss of power or flat spots in power delivery, Hard starting when cold, Uneven idle quality

Fix: The twin-cam needs regular valve lash adjustment with shims—not a quick screw-and-locknut job. If neglected, valves go tight (burning seats) or loose (hammering the cam). A skilled tech needs 3-4 hours to measure, calculate shim changes, and reassemble with new cover gaskets. If the cam or followers are damaged from neglect, you're looking at a head-off repair adding 10+ hours.

Estimated cost: $400-700 for adjustment; $2,500+ if cam damage

Typical onset: 100,000+ mi or oil starvation events

Symptoms: Heavy knocking from bottom end, worse under load, Metal shavings in oil or on magnetic drain plug, Sudden drop in oil pressure, Catastrophic engine failure if ignored

Fix: When main bearings spin or the crank is scored, the engine must come out for a full teardown. Crankshaft may need grinding or replacement, block needs align-boring if saddles are damaged. This is full-rebuild territory: 60-80 hours labor, machine shop work, and a complete rotating assembly. Many opt for a short block replacement to save time if core condition is poor.

Estimated cost: $5,000-9,000