1994 SUBARU LEGACY TURBO

Typical onset: 100,000-150,000 mi

Symptoms: Oil seepage visible on lower engine block, especially driver's side, Coolant weeping from head-to-block mating surface, Oil consumption increases gradually without blue smoke

Fix: Both head gaskets replacement requires 8-10 hours labor. Timing belt, water pump, and all seals should be done simultaneously. Resurface heads if warped more than 0.003 inch.

Estimated cost: $1,800-2,800

Typical onset: 120,000-180,000 mi

Symptoms: Blue smoke on boost after idle periods, Whining or grinding noise under acceleration, Loss of boost pressure, sluggish performance, Oil in intercooler piping

Fix: TD04 turbo replacement requires 4-6 hours including oil feed line cleaning and banjo bolt replacement (critical—clogged bolt is common root cause). Must replace oil and coolant lines. If rebuild attempted, center section often shows bearing damage beyond tolerance.

Estimated cost: $1,200-2,200

Typical onset: 80,000-140,000 mi

Symptoms: ATF puddle under front of vehicle, often rapid loss, Transmission overheating after highway driving, Visible corrosion or weeping at metal cooler lines where they crimp to rubber hoses

Fix: Replace both steel cooler lines and rubber sections as a set—2-3 hours labor. Inspect radiator-mounted cooler for internal contamination. Flush system and refill with Subaru ATF or equivalent. Early catch prevents transmission damage; ignore it and you're looking at rebuild.

Estimated cost: $350-650

Symptoms: Sudden loss of compression in one cylinder, Misfiring, rough idle, check engine light (P030x codes), Excessive blow-by visible at oil filler cap, May follow detonation event or aggressive tuning

Fix: Requires complete engine disassembly. Short block replacement is most common fix—15-20 hours labor. EJ22T is less prone than EJ25, but modified or overboost scenarios still crack ringlands on cylinder 4. Rebuild with forged pistons if planning boost increase.

Estimated cost: $3,500-5,500

Typical onset: 90,000-160,000 mi

Symptoms: No-start condition, engine cranks but won't fire, Random stalling while driving, usually restarts after cooling, Check engine light with crank sensor code (P0335)

Fix: Sensor is buried behind timing covers. Timing belt removal required for access—5-6 hours labor. Always replace with OEM Subaru part; aftermarket sensors fail prematurely. Do timing belt, water pump, and all seals while you're in there.

Estimated cost: $800-1,200

Typical onset: 70,000-120,000 mi

Symptoms: Excessive driveline clunk on throttle tip-in or shifts, Vibration at idle in gear, Visible sagging or torn rubber on rear transmission mount

Fix: Replace rear transmission crossmember mount—1.5 hours labor. Inspect pitch stopper (front mount) simultaneously; often needs replacement at same interval. Aftermarket polyurethane available but increases NVH.

Estimated cost: $250-450