Ford Courier Pricing and Specs

If the vehicle is running at all, then the fuel pump is working, It’s that simple. And while you’ve changed the pump twice in recent times, have you also replaced the pick-up tube that dangles from the pump and reaches down into the deepest depths of the fuel tank?

Sometimes, these tubes can split (and the split can be hard to see) allowing the pump to suck air rather than fuel if the split is exposed. Which could mean that your car, when parked on a slope sufficient to cover with fuel the split in the pick-up, started no problem. But, when parked on the flat and the fuel in the tank allowed to pool away from the pick-up tube, the split was exposed and the pump was sucking air again. It sounds like a long shot, but it has definitely happened before today.

The piece of the puzzle you've left out here is whether your Courier has a petrol or diesel engine. If it's the former, you could simply be looking at a worn out engine. These four-cylinders worked pretty hard and once they become worn, they start to blow smoke and lose power. That said, it could be something as simple as a blocked air filter element or a slack fuel pump.

If the vehicle has a diesel engine, there's a chance the intake system is choked up with black soot and oil fumes which eventually narrow the engine's breathing passages like cholesterol blocks a person's blood vessels. Suddenly, the air can't get into the engine properly and the engine loses power as a result. Again, though, it could be something completely different and apparently random such as the turbocharger's plumbing having fallen off, leaving the engine with no boost.

A word of warning, though, about driving a diesel Courier flat out everywhere. These engines were under-cooled and are notorious for overheating. Driving it with the throttle pedal on the floor is asking for problems.

The best way to test the operation of a fuel-injected car’s sensors is to have the vehicle scanned at a workshop with the necessary computer gear. The error codes that are revealed will tell you exactly what’s going on and save you the time and money of replacing bits and pieces until you find the actual culprit.

As for your symptoms, black smoke from the exhaust usually indicates a too-rich air:fuel mixture which could be the result of worn injectors, incorrect fuel pressure or a faulty temperature sensor. There are other causes, but those are the ones I’d investigate first. After a scan, of course.