2000 NISSAN SKYLINE

Typical onset: 80,000-150,000 mi

Symptoms: ticking or tapping from valve cover especially cold start, noise increases with RPM, loss of power if lifter collapses, check engine light for cam/crank correlation codes

Fix: RB26 hydraulic lifters wear from oil starvation or debris. Full lifter replacement requires cam removal, valve adjustment, new gaskets. Budget 12-16 hours labor. Many shops recommend doing cam seals, timing belt inspection, and valve cover gaskets simultaneously since you're in there.

Estimated cost: $2,200-3,800

Typical onset: 90,000-130,000 mi

Symptoms: blue smoke on acceleration or deceleration, excessive oil consumption, loss of boost pressure, screaming or grinding noise from turbo area, oil leaking from turbo seals

Fix: Ceramic turbine wheels crack, bearings fail from inadequate oil changes or restrictive oil feed lines. OEM turbos are unobtanium; expect aftermarket replacements. Includes new oil/coolant lines, gaskets, sometimes downpipe studs. 10-14 hours labor for twin-turbo setup. MUST address oil system health or replacement turbos die quickly.

Estimated cost: $3,500-6,500

Typical onset: 100,000+ mi or earlier with boost increases

Symptoms: white smoke from exhaust, coolant loss with no visible leaks, oil in coolant or coolant in oil, overheating, rough idle or misfires, bubbling in overflow tank

Fix: Factory head gaskets fail under sustained boost or improper torque. Requires head removal, resurface (both heads typically), ARP studs recommended, new gaskets, timing belt, water pump while apart. 20-28 hours labor. Any engine with boost modifications needs this preemptively or it's a ticking time bomb.

Estimated cost: $4,500-7,500

Typical onset: 70,000-120,000 mi

Symptoms: ATF puddles under car, transmission running hot, burnt ATF smell, slipping or delayed shifts, low fluid level on dipstick

Fix: Steel hardlines rust, rubber sections crack, cooler itself corrodes. Auto transmission (Skyline sedans/GT-T) more affected than manual GT-R. Replace lines, cooler, flush system, new filter. 4-6 hours labor. Check transmission mounts simultaneously as they sag and stress lines.

Estimated cost: $800-1,400

Typical onset: 100,000+ mi

Symptoms: vibration at idle that changes with RPM, squeaking or chirping from front of engine, visible separation of rubber ring from pulley, rough running, check engine light for crank position sensor codes

Fix: Rubber isolator separates from outer ring, causing timing marks to shift and catastrophic engine damage if pulley fails completely. Replacement requires serpentine belt removal, crank bolt extraction (often seized), new balancer, retorque. 3-5 hours labor. Critical safety item—do not ignore.

Estimated cost: $600-1,100

Typical onset: 60,000+ mi

Symptoms: hard starting especially hot, stumbling under acceleration, poor idle quality, fuel smell, check engine codes for lean/rich conditions, loss of top-end power

Fix: 25-year-old fuel system components fail: in-tank pump weakens, filter clogs (often neglected), injectors clog or leak. Pump replacement 4-6 hours (tank drop), filter 1 hour, injector cleaning/replacement 6-8 hours. Higher-mileage cars or those sitting extended periods need full system overhaul.

Estimated cost: $1,200-2,800

Symptoms: gauges intermittent or non-functional, warning lights staying on, accessories cutting out, no-start conditions, aftermarket alarm/turbo timer interference

Fix: 25-year-old wiring harnesses crack, connectors corrode, grounds fail. Imported cars often have poor aftermarket wiring from alarm systems, gauge clusters, ECU swaps. Diagnosis is time-intensive (2-6 hours). Parts cheap but labor brutal without proper wiring diagrams for JDM spec.

Estimated cost: $300-1,500