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Ignition Upgrades - Cont'd

Electrical and Electronic

Vehicle Information: Model: 911; Year: 1984; Body Type: Coupe; Engine (type, size, modifications): 3.2; Total Mileage: 40,000;

Further to my original query, after checking all the plug wires and finding no errors, I figured I would change the spark plugs and see if that may help. I'm pleased to report that the car runs perfect with the new plugs. It rev's freely and quickly to redline, with no misses or hesitation. Odd that changing the wires would reveal shortcomings in the old plugs.Hi Chris,I just replaced the factory original ignition wires on my 1984-911 with nice red 8.5mm Magnecors. Both the distributor cap and rotor have been replaced recently. I now experience misfires at 3800RPM and 4500RPM. The car was running fine with the old wires. I've made no other changes or alterations (just replaced the wires). The car idles fine, and runs fine to 3800RPM. After that, it bucks and hesitates violently.Any ideas?

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