2006 NISSAN SKYLINE

Typical onset: 80,000-140,000 mi

Symptoms: Cold-start rattle lasting 3-5 seconds that worsens over time, Check engine light with cam/crank correlation codes (P0011, P0021), Metallic rattling under acceleration or deceleration, Rough idle and reduced power in severe cases

Fix: Replace primary and secondary timing chains, tensioners, guides, and both cam phasers (VVT gears). Requires front cover removal, 12-16 hours labor. OEM Nissan parts strongly recommended over aftermarket. Many techs replace valve cover gaskets while in there.

Estimated cost: $2,200-3,800

Typical onset: 60,000-120,000 mi

Symptoms: Coolant in transmission fluid (strawberry milkshake appearance), Transmission slipping or delayed engagement, White smoke from exhaust if coolant enters trans severely, Overheating transmission temp gauge reading

Fix: Replace external transmission oil cooler (separate from radiator on most V36s). If cross-contamination occurred, requires full transmission flush or rebuild—cooler failure mixes ATF and coolant, destroying clutch packs. Preventive replacement recommended at 100k. 3-5 hours labor for cooler only, 15-25 hours if trans rebuild needed.

Estimated cost: $600-1,200 (cooler only), $3,500-5,500 (with trans rebuild)

Typical onset: 100,000-180,000 mi

Symptoms: Persistent ticking or tapping from valve covers, especially at idle, Noise may quiet down after engine warms up but returns, Worsens with oil changes skipped or extended intervals, Can affect multiple cylinders

Fix: Replace failed hydraulic lifters (often multiple) and inspect camshaft lobes for wear. Requires valve cover removal and careful diagnosis to identify which cylinders. VQ engines have 24 lifters total. 6-10 hours labor depending on how many need replacement. Use OEM lifters and fresh 5W-30 synthetic oil.

Estimated cost: $1,200-2,400

Typical onset: 70,000-130,000 mi

Symptoms: Clunking or thudding when shifting from Park to Drive/Reverse, Excessive vibration at idle in gear, Harsh shift feel, especially 1-2 and 2-3 shifts, Visible tearing or oil saturation of rubber mount

Fix: Replace transmission mount (large rear mount is most common failure point). Straightforward job requiring subframe support or transmission jack. OEM Nissan mount lasts longer than aftermarket. 1.5-2.5 hours labor.

Estimated cost: $250-500

Typical onset: 120,000-200,000 mi

Symptoms: External oil seepage at head-to-block mating surface, Slight coolant consumption without visible leaks, Occasionally triggers misfire codes if seepage affects spark plug wells, White residue or crusty buildup on cylinder head exterior

Fix: Replace head gaskets (both banks on V6), resurface heads if warped. Timing chains should be inspected/replaced during same job since front cover must come off. 16-22 hours labor for both heads, gaskets, timing components, and fluids. Often combined with timing chain refresh.

Estimated cost: $3,500-5,500

Typical onset: 90,000-150,000 mi

Symptoms: Hesitation or stumble under hard acceleration, Intermittent stalling, especially when fuel tank below 1/4, Long crank time when starting, fuel pressure codes, Rough running at highway speeds under load

Fix: Replace in-tank fuel filter and/or fuel pump assembly. Nissan doesn't list separate filter service interval—pump assembly replacement often required. Tank must be dropped. 3-5 hours labor. Use OEM or quality aftermarket (Denso, Bosch).

Estimated cost: $600-1,200