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Check the spark plug wires for a loose connection or a crack. Sometimes a spark plug wire will work well until internal engine pressures get high, which causes the spark plugs to develop a little extra internal resistance. When that happens the spark can jump through a crack in the wire. Also, check the distributor cap and rotor if they weren't replaced on the tune-up.

AnswerThe distributor cap, rotor, igniton lead set (including the lead to the coil) have all been replaced. The problem doesn't occur all the time when engine is warmed up, never when the engine is cold. Any ideas?


AnswerI have solved the problem myself, but for those of you who have experienced a similar issue, you will want to look at replacing the Oxygen sensor. As i ahd repalced the sensor 3 years ago, I didn't think it was the culpurit. It was a Bosch after-market item. My parts guy recommended NTK (made by NGK) O2 sensors for Japanese cars. I did the work this past weekend and the car is back to running normally.


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โˆ™ 2011-09-13 22:57:03
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Q: What could cause a 1989 Mazda 323 1600 engine freshly tuned to have either an ignition miss or fuel delivery problem occasionally under acceleration have replaced the throttle body and airflow meter?
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