misfire

I own a 1998 Mazda b2500. Engine code read misfire on cylinder four. The misfire is intermittent. while driving it is significant enough to shake the whole cab. I could also smell gasoline burning in the exhaust when the misfire first came up. I started first by checking the spark to the...

So I recently purchased a 2008 Ford Ranger with 57,000 miles and the 3.0 engine and it has developed a very very small intermittent misfire at idle. More of a rough idle with a occasional hard start. I’ve done spark plugs, wires,coil, fuel filter, air filter, looked for vacuum leaks, chased a...