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Changed Wires now rough start


LRPZ

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Have 78 280Z. Had bad coil wire and changed it and car started great. Changed plug wire #1, car started great. From #2 onwards could not get a start. Put back old plug wirs and will start, but rough idle and noticable exhaust. Checked seating of all wires and look good. Thoughts?

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Thanks for the reply....Yup, did them one at a time vs the old wires. Now starts with full new set, but still getting a rougher idle than usual and more visible exhaust out the pipe.

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Maybe during the wire change, the cap/rotor became dislodged. It happens.

There are wires and connectors in the distributor area that can be disturbed, such as coolant sensor, thermo-time, etc.

The point is- if everything was fine, excepting the coil wire, and then you changed something (the wire set) and now there is a new problem, you have to troubleshoot the problem from scratch, as if you have a no-start engine. Fuel,fire,air. Clean connections. Good grounds. Properly installed and adjusted components. Can't get a wrinkle out carpet without pushing it to the edge 'til it's gone...

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Thanks everybody....once I had the full set on again I moved on to other items (air filter, interior stuff) and let the car sit for a bit. Started right up a bit later, took it out for a ride and seemed ok, parked and started again later.

Blue...thanks for the pics...will check these tomorrow; too hot in the garage right now (4pm facing west in Florida is brutal).

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