2000 TOYOTA SUPRA

Typical onset: 60,000-100,000 mi

Symptoms: White smoke from exhaust, Overheating without visible leaks, Coolant loss into combustion chambers, Rough idle and misfires, Milky oil on dipstick or cap

Fix: Factory head gasket torque spec was marginal for boost. Requires head removal, resurfacing (usually warped 0.003-0.008 inches), ARP head studs, and MLS gasket upgrade. Solid 18-22 labor hours for both heads done properly with new timing belt, water pump, and all seals while apart.

Estimated cost: $3,500-5,500

Typical onset: 100,000-140,000 mi

Symptoms: Excessive blue or black smoke under boost, Loss of power above 3,000 RPM, Loud whining or grinding noise from engine bay, Wastegate rattle at idle, Oil leaking from turbo seals into intercooler piping

Fix: The sequential twin-turbo setup is complex and parts are NLA from Toyota. Most opt for single turbo conversion or upgraded twins. OEM rebuild/replacement of both turbos runs 12-16 hours with all vacuum lines, gaskets, and oil feed/return lines. Single turbo conversion adds fabrication time but simplifies long-term maintenance.

Estimated cost: $3,000-7,000

Typical onset: 80,000-120,000 mi

Symptoms: Hesitation or stumble under hard acceleration, Won't rev past 4,500 RPM under load, Long crank before starting when hot, Fuel pressure drops below 38 PSI at idle, Check engine light with lean codes

Fix: OEM fuel pump struggles to maintain pressure, especially on modified cars. Fuel filter (inline, often neglected) clogs and restricts flow. Pump replacement requires dropping the tank, 3-4 hours. Always replace filter, check rubber fuel lines for cracking, and inspect in-tank sock filter. Upgraded pump recommended if any power mods present.

Estimated cost: $600-1,200

Typical onset: 90,000-150,000 mi

Symptoms: ATF puddles under car near transmission, Burnt ATF smell, Transmission slipping or harsh shifts, Low fluid level on dipstick, Fluid spraying onto exhaust causing smoke

Fix: Hard lines and rubber hoses to external cooler crack from heat cycling and age. Lines run along exhaust routing. Requires lift access, replacement of all suspect lines and hoses, 2-3 hours. Flush and refill with Toyota Type T-IV. Neglecting this leads to transmission overheating and failure.

Estimated cost: $400-800

Typical onset: 70,000-110,000 mi

Symptoms: Clunking when shifting from Park to Drive, Excessive vibration at idle in gear, Visible transmission sag on lift, Driveline shudder during acceleration, Shifter feels loose or vague

Fix: Rubber deteriorates and tears, allowing drivetrain movement. More pronounced on higher-torque turbo cars. Replacement is straightforward with transmission jack support, 1.5-2 hours. Upgrade to polyurethane bushings adds NVH but improves feel on performance-driven cars.

Estimated cost: $250-500

Typical onset: 80,000-130,000 mi

Symptoms: Oil pooling on top of exhaust manifold with burning smell, Oil seepage visible around valve cover perimeter, Oil drips on garage floor from front of engine, Smoke from engine bay after hard driving

Fix: Rubber valve cover gaskets harden and shrink. Cam seals seep oil down timing cover. Valve cover gaskets are 2-3 hours with proper cleaning and retorquing procedure. Cam seals require timing cover removal, add 4-5 hours if doing timing belt simultaneously. Not urgent but creates mess and fire risk if oil contacts turbos.

Estimated cost: $400-1,200

Typical onset: 100,000-140,000 mi

Symptoms: Whining or groaning when turning at low speed, Intermittent heavy steering, Power steering fluid foaming in reservoir, Leaking fluid from pump or high-pressure line, Belt squealing under steering load

Fix: Pump seals fail and vanes wear, causing noise and eventual loss of assist. High-pressure lines also crack at crimp points. Pump replacement is 2-3 hours, includes fluid flush and line inspection. OEM pumps are expensive; quality rebuilds are acceptable. Bleed system thoroughly to avoid air pockets.

Estimated cost: $500-900