Toyota Prado: 1KD-FTV Head Gasket Failure

The 1KD-FTV cylinder head gasket is susceptible to failure, particularly on vehicles used for heavy towing or driven in hilly terrain, where sustained high thermal loads exceed the gasket's design tolerance. Coolant enters the combustion chambers or oil galleries, causing white exhaust smoke, coolant loss, and hydrolock risk. The aluminium cylinder head is also prone to warping if the engine is allowed to overheat even briefly.

• White or grey sweet-smelling smoke from the exhaust, especially on startup
• Coolant level dropping with no external leak
• Milky or mayonnaise-like sludge on the oil filler cap or dipstick
• Engine overheating gauge climbing under towing load
• Bubbling or gurgling in the coolant reservoir when engine is running

1. 1

   Check for white sweet-smelling exhaust smoke at startup, mayo-like sludge on the oil cap underside, and coolant level dropping without visible external leaks.

2. 2

   Inspect the overflow bottle for oily residue.

3. 3

   If a workshop inspection is possible: Perform a block test (combustion gas test on the coolant reservoir) and a cooling system pressure test.

Parts involved: Head gasket.

$2,800 to $5,500 at New Zealand independent workshop rates. That is for this job on its own, not for the car.

An estimate, in NZD, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

• “Has the vehicle ever overheated, and has the head gasket been replaced or the head resurfaced?”
• “Would you agree to a block test (combustion gas test) being performed before purchase?”
• “Has the vehicle been used for regular heavy towing, and what loads were towed?”

The failure described above is documented in published sources — owner forums, technical service bulletins, recall notices and workshop write-ups — held in our fault database. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them, and it is a starting point for an inspection rather than a manufacturer statement.