Ford Courier: 2.6 petrol overheating and head gasket failure at high kilometres
2.6 petrol overheating and head gasket failure at high kilometres is a common cooling fault on the Ford Courier on the 1985–1998 cars, and we rate it critical. Putting it right costs $1,500 to $3,500 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 10 documented faults on the Ford Courier.
- Vehicle
- Ford Courier
- Engine
- 2.6L
- Years
- 1985–1998
- Fuel
- petrol
- System
- Cooling
What you are looking at
Example of the part — not this vehicleA used multi-layer head gasket. Discolouration between a cylinder and a water gallery is the tell.
What goes wrong
The 2.6 petrol in these utes will run a very long time, but by now the cooling system is usually original-ish and tired, and an overheat is what finishes the head gasket. The pattern owners describe is a radiator that has quietly lost capacity, a thermostat or water pump nobody has touched, and then a hot day with a load on the back. Once the gasket goes, coolant gets into a cylinder or the oil and the head often needs skimming or replacing. On a ute worth what these are worth, that repair is a serious share of its value — so a temperature gauge that creeps up under load is the single most useful thing to watch for on the test drive.
What you would notice
- Temperature gauge climbing on hills or with a load
- Coolant level dropping with nothing on the ground
- Creamy sludge under the oil filler cap
- White smoke and a sweet smell from the exhaust once warm
- Bubbles in the radiator or header tank with the engine running
How to check it
Where to look. Radiator and thermostat at the front, cylinder head on top of the engine
With the engine stone cold, take the radiator cap off and look at the coolant — clean and coloured is what you want; brown, oily or rusty is not.
Take the oil filler cap off and check the underside for creamy residue.
Start it and let it idle with the cap off, watching for a steady stream of bubbles rising through the coolant.
Then drive it properly — a hill, or a motorway on-ramp — and watch the temperature gauge for the whole drive rather than glancing at it once.
Smell the exhaust when you get back.
Ask when the radiator, thermostat and water pump were last done, and treat "never" as a cost to price in rather than a reassurance.
If a workshop inspection is possible: ask for a combustion-gas test on the coolant and a cooling system pressure test.
What it costs to put right
$1,500 to $3,500 at New Zealand independent workshop rates. That is for this job on its own, not for the car.
Ask the seller
- “Has it ever overheated?”
- “Has the head gasket or head ever been done?”
- “When were the radiator, thermostat and water pump last replaced?”
Now check the Ford Courier 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.
Where this comes from
- CarProblemGuru — 'Mazda B2600 Common Problems (Maintenance and Fixes)'
- RepairPal — 'Common Mazda B2600 Problems & Complaints'
Ford Courier buyer questions
Is 2.6 petrol overheating and head gasket failure at high kilometres serious on a Ford Courier?
We rate it critical and common on the Ford Courier. The 2.6 petrol in these utes will run a very long time, but by now the cooling system is usually original-ish and tired, and an overheat is what finishes the head gasket. The pattern owners describe is a radiator that has quietly lost capacity, a thermostat or water pump nobody has touched, and then a hot day with a load on the back. Once the gasket goes, coolant gets into a cylinder or the oil and the head often needs skimming or replacing. On a ute worth what these are worth, that repair is a serious share of its value — so a temperature gauge that creeps up under load is the single most useful thing to watch for on the test drive.
How much does it cost to fix on a Ford Courier?
$1,500 to $3,500 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 Ford Courier years are affected?
Our research records this fault on the 1985–1998 Ford Courier. 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?
With the engine stone cold, take the radiator cap off and look at the coolant — clean and coloured is what you want; brown, oily or rusty is not. Take the oil filler cap off and check the underside for creamy residue. Start it and let it idle with the cap off, watching for a steady stream of bubbles rising through the coolant. Then drive it properly — a hill, or a motorway on-ramp — and watch the temperature gauge for the whole drive rather than glancing at it once. Smell the exhaust when you get back. Ask when the radiator, thermostat and water pump were last done, and treat "never" as a cost to price in rather than a reassurance. If a workshop inspection is possible: ask for a combustion-gas test on the coolant and a cooling system pressure test. Look here: Radiator and thermostat at the front, cylinder head on top of the engine