Hi brettj88,
You can test the plug cables with an ohmmeter. Resistance should be between 5 to 15 k ohms. No continuity or ohms higher than 25k means the cable is bad.
That should be the highest possibility.
For No 1 cylinder there are no vacumn lines nearby so should not be the problem unless the manifold gasket or valves are leaking. This would result in high or erractic idling.
What is the condition of the spark plugs? If there are a lot of carbon deposits, it could be due to fouling caused by bad valve seals.
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Tuesday, October 14th, 2008 AT 3:05 PM