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450knotOffice 450knotOffice is offline
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Join Date: Sep 2004
Location: Mission Viejo, CA
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Since you seem to have adjusted the valves properly, my guess is the plug wires (including the coil wire) and or the distibutor cap. What you're desribing sounds more ignition related than valve related.

I'd recheck all the wires and the cap and rotor. Who knows...you might even have a crack somewhere in a plug wire, which would cause erratic firing of that plug and sometimes even cause an adjacent plug to fire out of sequence.

Let us know how it turns out.
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2009 997.2 Carrera 4S
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Old 03-07-2005, 10:08 AM
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