Dodge 5.2 magnum V8 misfire

This van was a Chrysler program car for the first several years of its life and only entered private service in 2004 with 42.000 miles. I think the corporation used it as a taxi at one of their facilities. Its an eight passenger short wheelbase.

The first private owner drove it 72,000 miles in four months and I then acquired it from a new car dealer. It seemed to run well but 50 miles from the dealer’s lot the intake manifold plenum plate gasket failed and it started to suck oil out of the engine with spectacular smoke clouds. Being familiar with Magnum engine problems we babied it home with lots of oil and began working on the engine problems.

The van drives very nicely now with seven strong cylinders and the mileage is actually very good but it still has this nagging weak cylinder and part throtle misfire.