The 1973 Charger represents the last of the third-gen B-bodies with a mix of Slant-Six economy and big-block muscle options. Most issues stem from aging rubber, ignition components, and specific carburetor/emission quirks from that transitional smog-era year.
Timing Chain Stretch and Failure (All V8s)
Common · high severityTypical onset: 80,000-120,000 mi
Symptoms: Rough idle and poor cold starts, Rattling noise from front of engine on startup, Ignition timing jumps around or won't stay set, Loss of power, backfiring through carburetor
Fix: Replace timing chain, gears, and tensioner. Requires front accessory removal, harmonic balancer puller, and timing cover gasket. Count on 5-7 labor hours for a straightforward job, more if water pump or oil pan gaskets are leaking and done at same time.
Estimated cost: $600-1,200
Carter/Holley Carburetor Issues (318/340/360/400)
Common · medium severitySymptoms: Hard starting when hot (heat soak), Hesitation or stumble off idle, Black smoke and fuel smell from running too rich, Flooding or leaking externally at gaskets/seals
Fix: Full rebuild kit with careful attention to float levels and accelerator pump settings. Early '73 smog carbs are finicky; many owners swap to earlier non-EGR carbs or Edelbrock replacements. Rebuild takes 3-4 hours if you're experienced, double that if you're learning. New/reman carb is often faster.
Estimated cost: $300-800
Electronic Ignition Conversion Reliability (Original Points Systems)
Occasional · medium severitySymptoms: No-start or random stalling, Misfiring under load, Poor fuel economy and lack of power
Fix: Many '73s still have points; those converted to Mopar electronic ignition see control box or pickup coil failures. Original points need frequent adjustment. Proper conversion to Mopar Performance ignition with quality control box is 2-3 hours including distributor recurving if needed.
Estimated cost: $200-500
Torsion Bar and Front Suspension Bushing Wear
Common · medium severityTypical onset: 60,000-100,000 mi
Symptoms: Clunking over bumps from front end, Wandering or vague steering feel, Uneven tire wear on inside edges, Car sits lower on one side
Fix: Upper and lower control arm bushings harden and crack; sway bar bushings deteriorate. Full front rebuild includes bushings, ball joints, tie rod ends. Torsion bars themselves rarely fail but adjusters seize. Plan 6-8 hours for complete overhaul with alignment.
Estimated cost: $800-1,500
Rear Leaf Spring and Shackle Bushing Failure
Common · low severityTypical onset: 70,000+ mi
Symptoms: Rear end sags or sits uneven, Squeaking or groaning over bumps, Axle feels like it's moving side-to-side, Harsh ride quality
Fix: Leaf spring bushings and shackles wear out, springs sag or crack. Poly bushings are popular upgrade. Complete rear spring job with new bushings and shackles is 4-5 hours. Springs themselves add cost if replacement needed.
Estimated cost: $400-900
Fuel Tank Sending Unit and Gauge Inaccuracy
Occasional · low severitySymptoms: Gas gauge reads empty, full, or pegged regardless of fuel level, Erratic needle movement, Gauge works cold but fails when warm
Fix: Sending unit float arms corrode or resistance coils fail; tank must be dropped. Also check dash voltage limiter (common failure that affects all gauges). Sending unit replacement is 2-3 hours; limiter is 30 minutes if you can access the cluster.
Estimated cost: $250-600
Heater Core Leaks (All Models)
Occasional · medium severitySymptoms: Sweet coolant smell in cabin, Foggy windshield that won't clear, Wet passenger-side floor, Low coolant level with no external leaks
Fix: Heater core replacement requires near-complete dash disassembly on B-bodies — one of the worst jobs on these cars. Budget 8-12 hours labor unless you pull the entire dash assembly out. Most techs charge top-tier labor rate for this nightmare.
Estimated cost: $800-1,800
Buy it if you're handy or have a trusted Mopar shop — these are simple, tough cars once you address the typical 50-year-old wear items, but be ready for carburetor headaches and front-end work.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.