In general, when the two items you mention go bad, the vehicle will not run.
Here are some thoughts. First off, was the car having the problems prior to the tune-up? If so, then I might look at the injectors, and when the plugs were pulled out of the vehicle what did they look like. Sometimes one will have a color that varies from the others which can help to narrow down.
Has the vehicle had a compression check done? Have you looked the pcv valve and egr valve?
Tuesday, April 8th, 2008 AT 12:27 PM