2002 MITSUBISHI PAJERO MINI

Typical onset: 80,000-140,000 mi

Symptoms: Loud ticking or tapping from valve cover, especially cold start, Noise may quiet down when warm or persist throughout operation, Loss of power if lifter collapses completely, Check engine light with misfire codes in severe cases

Fix: The 4A30T uses hydraulic lifters that wear or clog from infrequent oil changes. Replacement requires cam removal—about 6-8 hours labor if doing all lifters, which is recommended since access requires significant disassembly. Always replace cam seals and valve cover gasket while in there.

Estimated cost: $1,200-2,000

Typical onset: 100,000-160,000 mi

Symptoms: White smoke from exhaust, especially after warm-up, Coolant loss with no visible leaks, Overheating or fluctuating temperature gauge, Milky oil or oil in coolant reservoir, Rough idle and loss of power

Fix: Turbo kei engines run high specific output and the head gasket can fail, particularly if overheated even once. Job requires head removal, resurfacing (usually warped 0.003-0.008 inches), new gasket set, and timing belt replacement while apart. Plan 10-14 hours labor. If head is cracked, you're looking at a used head or engine replacement.

Estimated cost: $2,500-4,200

Typical onset: 90,000-130,000 mi

Symptoms: Automatic transmission fluid puddles under vehicle, Burnt smell or dark ATF color, Harsh or delayed shifts when fluid gets low, Transmission overheating in summer or towing conditions

Fix: The small external oil cooler and hard lines corrode and crack, especially on road-salt exposed or coastal vehicles. Replacing cooler and lines is 2-3 hours labor. Critical to flush system and inspect for metal debris—if present, internal damage may be starting. These little 3-speeds don't tolerate low fluid.

Estimated cost: $450-850

Typical onset: 70,000-120,000 mi

Symptoms: Clunking when shifting from park to drive or reverse, Excessive vibration at idle in gear, Visible drivetrain movement when rocking vehicle, Grinding or rattling over bumps

Fix: The rubber transmission mount deteriorates from heat and age, allowing excessive movement. Replacement is straightforward—1.5-2 hours labor with proper support of transmission. Inspect all engine mounts at same time since they age similarly.

Estimated cost: $250-450

Typical onset: 110,000-150,000 mi

Symptoms: Visible rubber separation or wobble on crankshaft pulley, Vibration that worsens with RPM, Squealing or chirping from belt area, Timing marks don't line up properly during service

Fix: The rubber damper ring separates from the hub, causing belt alignment issues and potential timing problems. Requires removal of accessory belts and crankshaft bolt—3-4 hours labor due to tight engine bay. Use OE or quality aftermarket; cheap ones fail quickly on these high-revving turbo engines.

Estimated cost: $400-700

Symptoms: Rough running or hesitation under boost, Poor acceleration and reduced power, Hard starting after sitting, Stalling when fuel tank is low

Fix: Many imported examples sat or were inadequately maintained. Rust and sediment in tank clog the inline filter. Filter replacement is 1 hour, but if contamination is severe, tank needs to be dropped and cleaned—add 3-4 hours. Replace filter every 30,000 miles on these; fuel system is sensitive to restriction.

Estimated cost: $120-250 filter only, $600-1,000 with tank service