You're on the right track, but I wish you had ONLY switched the #3 and #4 wires at the coil ... and reread the codes as a "first step". Sometimes "too much change" is "too much change" ... to keep account of.
A compression test reveals a lot of info. Its just a lot of work.
It would be very smart if we all made compression tests on our engines ... while running good, or even when brand new ... and keep this as part of our maintenance records. I bought a new German Ford (Taunus) many years ago. A factory recorded engine compression test was included in the documents.
Last edited by 12Ounce; 06-09-2009 at 07:40 AM..
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