Mitsubishi Challenger Problems

THERE'S no problem about converting the Challenger to run on LPG. Like any Mitsubishi in recent years, the Challenger's engine is LPG-compatible. You can convert it with confidence.

I DON'T know of a smaller wheel you could use. You could consider carrying an emergency foam repair kit and do away with the spare, which is becoming a popular way of getting around the problem.

THERE is something wrong with your car that is causing the backfire. It's not unusual with a vapour-mixer system like yours, but it shouldn't occur if the engine and, particularly the ignition system, is in good condition and set correctly. The explosion is caused by the LPG/air mixture in the intake manifold igniting, and it's usually because of a stray spark. Check the condition of the spark plug leads and go right through the engine settings and make sure that are correct.

There are three main types of LPG systems: the mixer/venturi system that was very successfully used for many years and which is like a carburetor on a regular petrol engine; the vapour-injection system that operates like the fuel-injection system that's fitted to your car; and the latest liquid-injection system that injects the LPG into the inlet manifold in liquid form. It's claimed that the liquid-injection system is the most efficient and delivers the best outcome, but vapour-injection is claimed by some to be almost as efficient and well proven. Either liquid or vapour-injection from a recognized brand, like Eurogas or IMPCO, is your best bet.

Yes. Oil leaks are not uncommon, particularly when a car gets to the age of yours. At least have a mechanic check it and tell you where the oil iscoming from and how much it would cost to fix. But if it’s been a good car, as you say, I would definitely repair it.