So, after all that it is still missing?
Did he do a compression test? It would be wise to do this first to verify that the engine is worthy of a complete tune up.
A missfire code can be caused by a bad crank sensor but it needs to be monitored by a scan tool to verify.
They are common for pressure regulators and spider failures. I would get a second opinion on this.
Roy
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Saturday, April 28th, 2012 AT 5:43 PM