1997 ISUZU AMIGO

Typical onset: 80,000-140,000 mi

Symptoms: Heavy knocking or rattling from lower engine, Sudden loss of oil pressure, Metal shavings in oil, Engine seizure if ignored

Fix: This 2.6L four-cylinder suffers premature bearing wear due to marginal oiling and oil consumption issues. Requires complete engine teardown, crank polishing or replacement, new bearings, often pistons and rings while you're in there. 18-25 labor hours for in-chassis rebuild; many shops recommend short block replacement instead at 12-16 hours swap time.

Estimated cost: $2,800-5,500

Typical onset: 90,000-130,000 mi

Symptoms: White smoke from exhaust, Coolant loss with no visible leaks, Overheating under load, Milky oil or oil in coolant reservoir

Fix: The 4ZE1 head gaskets fail frequently, often after minor overheating episodes. Requires head removal, resurfacing (usually warped), new gasket set, timing components while apart. 10-14 labor hours. If caught late, may have caused bearing damage requiring full rebuild.

Estimated cost: $1,200-2,200

Typical onset: 70,000-120,000 mi

Symptoms: Blue smoke on startup or acceleration, Burning through 1+ quart every 500-800 miles, Fouled spark plugs, Carbon buildup on valves

Fix: Worn piston rings are the root cause of many bearing failures on this engine—oil consumption leads to low levels and bearing death. Ring replacement requires full disassembly, bore honing, new rings and often pistons. 16-22 labor hours. Many owners band-aid this by adding oil until bearing failure forces a rebuild.

Estimated cost: $2,200-3,800

Typical onset: 100,000-150,000 mi

Symptoms: Transmission fluid leaking near radiator, Burnt transmission fluid smell, Slipping or delayed shifts after leak develops, Pink fluid under vehicle

Fix: Steel cooler lines rust through where they connect to radiator or run along frame. Replacement lines plus fluid flush. If leak goes unnoticed and fluid runs low, transmission damage follows quickly. 2-3 labor hours for lines, but often discovered after transmission damage already occurred.

Estimated cost: $250-500

Typical onset: 80,000-130,000 mi

Symptoms: Clunking when shifting from park to drive, Excessive engine/trans movement visible from engine bay, Vibration at idle in gear, Difficulty shifting smoothly

Fix: Rubber transmission mount deteriorates and collapses, especially on 4WD models with manual transmission. Creates driveline slop and harsh shift feel. Simple replacement but requires trans support. 1.5-2.5 labor hours.

Estimated cost: $180-350

Symptoms: Stalling under load or at highway speeds, Hesitation during acceleration, Hard starting when hot, Loss of power uphill

Fix: Often neglected maintenance item becomes critical—clogged filter starves engine of fuel. These trucks rarely got proper service intervals. Located under vehicle near tank. Should be replaced every 30k but many go 80k+. 0.8-1.2 labor hours.

Estimated cost: $120-220