Ask the Guide

The first thing to ascertain is what the fluid is. Is it coolant, fuel, oil or even brake fluid? All these fluids have different ways of leaking, so make sure you know what you’re dealing with. Also, don’t rely on the location of the fluid on the ground as a means of diagnosing the cause. Leaks can start in one place but appear elsewhere as they work their way along wiring, pipes, chassis rails and plenty more before they actually make it to the ground.

Meantime, if the leak is coolant and is actually coming from the back of the engine, there are a few likely culprits. There are heater hoses that run in this area and have been known to leak, as well as a welch plug that can corrode and cause a leak in this area. Other known coolant leak-points in the Territory include the radiator and the O-ring seal at the back of the water pump. If you’re really unlucky, the leak could also be from a head gasket. Have the car checked out by a mechanic, because coolant leaks only ever really get bigger over time, never smaller.

Ford replaced the Mark 1 Focus with the Mark 2 in June 2005, so interchangeability would depend on the build date of the 2005 Focus you have. While the Mark 1 and Mark 2 Focus both offered a two-litre four-cylinder engine (among others) the two engines were from different engine families. The earlier car used a member of the Zetec family, while the Mark 2 Focus two litre was from the Duratec family.

So, unless both Focuses are Mark 2 cars, there's very little chance of sharing things like intake manifolds, even if the spark plugs and ignition systems could be swapped between Mark 1 and Mark 2 cars.

From what I can gather, the engine in your Barina is an interference design. That is, if the timing belt breaks, the pistons and valves (in the cylinder head) will, indeed, meet head on at speed, turning the engine to junk in a slip-second. So make sure the timing belt is changed every 100,000km to reduce the risk of this happening.

Some engines with timing belts are non-interference designs, meaning that a broken belt will simply allow the pistons and crankshaft to continue to rotate without hitting (or damaging) the valves. Replacing the belt and retiming the engine will return it to full health. You'll still be stranded by the roadside if it happens, of course.

I agree that 136,000km is not a realistic lifespan for a modern car. Especially one that has been as meticulously maintained as yours. Hyundai engines of this vintage are not without their known problems, but in my experience, Hyundai has been pretty good about replacing them when the failures have been the endemic kind.

Your first step should be to by-pass the dealership you've been dealing with and talk directly to Hyundai's customer service department. The dealership, as you've correctly identified, will be more interested in selling you another car, while Hyundai head office is more likely to be interested in keeping you as a long term customer. Ultimately, the car will need to be inspected independently to figure out what went wrong and what caused it.

By the way, if the dealership is right and the 'damage has already been done' by the time the warning light illuminates, what's the point of having a warning light in the first place? The dealership in question has just revealed itself to be ignorant at best with comments like that.

By the way, even though your car has a 2013 build date, the warranty would have started the day it was first registered. Even so, it's well and truly out of warranty, but if the problem is one of the known faults of that engine, Hyundai may offer you a pro rata deal to assist in repairs.