intermittant spark cylinders 2-3

1993 MITSUBISHI ECLIPSE
166,000 MILES • 4 CYL • FWD • AUTOMATIC
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ELHERRON
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i have a 1993 mit. eclipse 2.0 non-turbo and im getting intermittant spark on cylinders 2 and 3.i have already changed the computer, coil pack, and power transister module(all used parts from wreacking yard) its always when i first start the car this problem occures. once the car is started it never fails. when it does fail if i try long enough the spark will come back. any ideas???
May 22, 2011 at 4:36 PM
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KHLOW2008
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Have you checked the crank and cam sensors?
May 22, 2011 at 8:04 PM
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ELHERRON
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since 1 and 4 fire at same time is there 2 outputs from the cas
May 23, 2011 at 1:52 AM
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KHLOW2008
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There is one output for 1 and 4 whreas 2 and 3 has another. If the sensor gears are faulty, they could miss when at 2 or 3.
May 23, 2011 at 12:06 PM
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ELHERRON
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ok cool that will be the next thing i try i will let you know thanks alot
May 23, 2011 at 3:56 PM
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KHLOW2008
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You're welcome.

Check the gap between sensor and sensing gears. Look for uneven/wavy movement of the sensing gears and chipped teeth.
May 23, 2011 at 4:16 PM