1964 FSO WARSZAWA

Symptoms: Excessive valve clatter on cold starts that persists when warm, Loss of power and rough idle, Metallic ticking that increases with RPM, Oil consumption increase

Fix: The solid lifters in the S-21 require frequent adjustment every 3,000-5,000 miles, but wear in the camshaft lobes and lifter faces is common after decades of service. Complete lifter replacement involves cylinder head removal due to pushrod configuration. Expect 12-16 hours labor for full lifter set replacement with cam inspection. Often discover cam lobe wear requiring simultaneous camshaft replacement.

Estimated cost: $1,800-3,200

Typical onset: 50,000-80,000 mi

Symptoms: Rattling noise from front of engine at startup, Rough idle and misfiring, Difficulty starting when hot, Check timing marks show 5-10 degrees retardation

Fix: The single-row timing chain and primitive tensioner design means chains stretch significantly by 60k miles. Requires front cover removal, new chain, gears, and tensioner. Always replace the harmonic balancer simultaneously as the rubber deteriorates. This is 8-10 hours labor and parts are scarce—expect to source from European specialty suppliers. Catastrophic failure leads to valve-to-piston contact.

Estimated cost: $1,200-2,400

Symptoms: White smoke from exhaust, Coolant mixing with oil creating milky residue, Overheating with no external leaks, Compression loss in adjacent cylinders

Fix: The cast iron head and block use antiquated gasket materials that fail from thermal cycling and corrosion. Deck surface warping is common requiring milling—many blocks are already at minimum spec. Head removal reveals 14-18 hours labor, plus machine shop time. Finding correct gasket sets requires specialty Eastern European parts suppliers. Retorquing head bolts every 12 months was originally specified but rarely done.

Estimated cost: $2,200-4,000

Symptoms: Transmission fluid leaking near radiator, Pink fluid dripping from front of car, Transmission slipping after warmup, Low fluid level despite no visible undercar leaks

Fix: The steel cooler lines rust through at connection points and along the frame rail. Replacement lines are NLA from factory—requires custom fabrication using AN fittings and braided stainless or mild steel brake line. Also inspect the cooler itself inside the radiator tank for internal leaks causing fluid cross-contamination. 3-4 hours labor for line fabrication and installation.

Estimated cost: $400-750

Symptoms: Hesitation and stumbling under acceleration, Hard starting when hot, Stalling at idle after sustained highway driving, Fuel smell around carburetor

Fix: The single downdraft carburetor uses cork and leather gaskets that dry out and fail. Fuel filters clog rapidly from tank sediment in aging fuel systems. Complete carburetor rebuild with modern gasket materials takes 4-6 hours including linkage adjustment. Tank cleaning and sending unit service often required simultaneously. Ethanol in modern fuel destroys original rubber components.

Estimated cost: $600-1,200

Symptoms: Excessive driveline clunk when shifting, Vibration at highway speeds, Visible transmission movement in neutral, Grinding sensation through shifter

Fix: The rubber transmission mount deteriorates and the steel crossmember cracks at weld points from decades of stress. Replacement mounts are difficult to source—many owners fabricate using similar-size truck mounts. Crossmember welding requires transmission removal for proper access. 5-7 hours labor. Inspect engine mounts simultaneously as they share similar failure patterns.

Estimated cost: $500-900