Mitsubishi Challenger Engine 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.

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.

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.