P0306 Chevrolet -

Question

Apparently, the mechanics I've visited don't have a clue! After random misfire code appeared for a month and after Id replaced the plugs and wires they can't figure it out. Cylinder 6 misfire and random are now appearing. The fuel pump relay was changed. But I'm getting no answers, my pocket book is getting lighter and my truck still has a chugging idle at a stop light and slow take off!

Answer 1

HI there,

You could still have an issue inside the engine. I would perform a compression test and if that shows good, then do a leak down test on that cylinder.