CriticalCommonEngine

Toyota Hilux: 2L-T / 2L-TE turbo-diesel cylinder head cracking (turbo engines, not the 3L or 5L)

2L-T / 2L-TE turbo-diesel cylinder head cracking (turbo engines, not the 3L or 5L) is a common engine fault on the Toyota Hilux on the 1984–1997 cars, and we rate it critical. Putting it right costs $2,800 to $5,500 at New Zealand independent workshop rates. Below is what goes wrong, the symptoms to notice on a test drive, where to look, and what to ask the seller before you hand over any money. It is one of 59 documented faults on the Toyota Hilux.

Vehicle: Toyota Hilux
Engine: 2L / 2L-TE
Years: 1984–1997
Fuel: diesel
System: Engine

This page covers the Toyota Hilux as a model. Some faults only affect particular engines or build years — enter a plate below to narrow the list to one car.

All Toyota Hilux faults59 documented faults on this model

What you are looking at

What goes wrong

The 2.4-litre turbocharged 2L-T and later 2L-TE fitted to LN65 and LN106 Hilux crack their cylinder heads. The crack forms between the valves or at an injector seat, and heat is what triggers it - a single overheat, a tired radiator, or years of sustained boost are enough. Once cracked, coolant is pushed into the cylinder and combustion gas is pushed back into the cooling system, so the header tank bubbles and the coolant level drops with nothing on the ground. Toyota released a revised casting (part 11101-54121) with a thicker section between the water gallery and the combustion face, and that later head is what a good repairer fits - a ute repaired with another early head will simply do it again. This is the turbocharged 2L-T family specifically; it is a different failure from the head gasket problems seen on the naturally aspirated 3L and 5L engines.

What you would notice

White smoke from the exhaust that does not clear once the engine is warm
Bubbles rising in the radiator or header tank with the engine running
Coolant level dropping with no leak on the ground
Heater blowing cold because the system has airlocked
Temperature gauge creeping up when towing or climbing

How to check it

Where to look. Cylinder head on top of the engine; the evidence shows up at the radiator header tank and out the exhaust.

Get there before the seller starts it, and watch the first minute of a cold start from behind - thick white smoke that hangs in the air and smells sweet rather than of diesel is coolant being burned.
With the engine cold, take the coolant reservoir cap off, then start the engine and watch for a steady stream of bubbles or for the level rising and being pushed out.
Look at the coolant itself: brown, oily, or with a film on top is bad news.
Feel the top radiator hose and the heater hoses once it is warm, and check the heater actually blows hot on the test drive.
Ask the seller how often they top the coolant up, and ask directly whether the head has ever been off and which casting was fitted.

Parts involved: Cylinder head, Turbocharger.

What it costs to put right

$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.

Ask the seller

“Has the cylinder head ever been replaced or reconditioned, and can I see the invoice?”
“Does it use coolant, and how often do you top it up?”
“Has it ever overheated - towing, or with a burst hose?”

Now check the Toyota Hilux you are actually looking at

Everything above is true of the model, and it is free. What it does not tell you is whether THIS car has been looked after: its odometer history and whether the reading has ever gone backwards, whether there is still money owing on it, whether it has been reported stolen, how many owners it has had and what it is really worth today. That comes from the official records for that plate. Enter the plate for the free details, or get the full history and a market valuation from $13.49.

Not sure what you would be paying for? See what a full KickTyres check includes.

Where this comes from

The failure described above is documented in the sources below. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them.

EngineCode.uk: 'Toyota 2L-T Engine Review - HP, Torque, Common Issues' - cylinder head cracking listed as the primary reliability concern
IH8MUD forum thread: '2LTE Head Replacement'
Revised Toyota cylinder head casting 11101-54121, sold as the fix with a thicker section between the waterways
BC 4x4 forum thread: '2LT and 2L'

Toyota Hilux buyer questions

Is 2l-t / 2l-te turbo-diesel cylinder head cracking (turbo engines, not the 3l or 5l) serious on a Toyota Hilux?

We rate it critical and common on the Toyota Hilux. The 2.4-litre turbocharged 2L-T and later 2L-TE fitted to LN65 and LN106 Hilux crack their cylinder heads. The crack forms between the valves or at an injector seat, and heat is what triggers it - a single overheat, a tired radiator, or years of sustained boost are enough. Once cracked, coolant is pushed into the cylinder and combustion gas is pushed back into the cooling system, so the header tank bubbles and the coolant level drops with nothing on the ground. Toyota released a revised casting (part 11101-54121) with a thicker section between the water gallery and the combustion face, and that later head is what a good repairer fits - a ute repaired with another early head will simply do it again. This is the turbocharged 2L-T family specifically; it is a different failure from the head gasket problems seen on the naturally aspirated 3L and 5L engines.

How much does it cost to fix on a Toyota Hilux?

$2,800 to $5,500 at New Zealand independent workshop rates. That figure is for this job on its own. A car showing the symptoms on this page is usually worth either walking away from or negotiating down by at least the repair figure.

Which Toyota Hilux years are affected?

Our research records this fault on the 1984–1997 Toyota Hilux. Build dates move around, especially on imported cars, so treat the range as the years to look hardest at rather than a guarantee either way. The official records tell you the exact build and first registration date for the car in front of you.

How do I check for it before I buy?

Get there before the seller starts it, and watch the first minute of a cold start from behind - thick white smoke that hangs in the air and smells sweet rather than of diesel is coolant being burned. With the engine cold, take the coolant reservoir cap off, then start the engine and watch for a steady stream of bubbles or for the level rising and being pushed out. Look at the coolant itself: brown, oily, or with a film on top is bad news. Feel the top radiator hose and the heater hoses once it is warm, and check the heater actually blows hot on the test drive. Ask the seller how often they top the coolant up, and ask directly whether the head has ever been off and which casting was fitted. Look here: Cylinder head on top of the engine; the evidence shows up at the radiator header tank and out the exhaust.