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Recommended Posts

Though I'd pass on my experience with a misfire after maintenance.

Changed plugs, cleaned the engine, changed the clutch. After maintenance, everything is normal-until the engine hit 180 degrees on the gauge. Then I';d get a missing cylinder. Every time, it was fine until the engine warmed up to 180 degrees.

Trouble codes gave me P115 MAF sensor, P124 Intake air sensor, P 257(?) Misfire detection, and P 507 Misfire #6 cylinder. BTW, this was the final set of codes that the car threw. Other times, it would just tell me about the MAF sensor.

Listening to the exhaust pipes, I could tell that the problem was on the right side (left exhaust sounded rougher), and finally isolated it to the r/h forward (drivers view) cylinder. Putting my hand close to the pipes, I could tell which cylinder wasn't firing by the difference in temperature.

Solution: connect the d#%@ed lead to the coil pack properly! Apparently, the connector was making enough contact to fire the plug when cold. When the engine warmed up, I guess the increased cylinder pressure was enough to stop the plug from firing using the reduced input voltage to the coil, caused by the poor connection.

Smooth motor, no codes, everything is "groovy"...

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