Probably a vacuum leak. Probably from a bad intake manifold gasket. Vacuum
leaks will cause misses, like it's not hitting on all cylinders, and prevent
it from idling. Probably too young to have enough miles on it for much else
to be wrong with it. Put a vacuum gage on the engine and try to let it idle,
or run as slow as it will without dying... you may even hear a vacuum leak.
Could also be from a vacuum plug coming off...
Another possibility is the timing belt jumped a cog, but I doubt it would
start... and if it did, it wouldnt run well or with any amount of power.
My money would be on a vacuum leak.
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