Question about 1995 Honda Civic

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Engine turns over, won't start, no fire at plugs. There's plenty of fuel, and no fire from any of the plugs. All fuses and fusible links are good. I pulled the plugs to check for a spark, and there's no trace of spark, not even a weak one. Car was running fine, rode for an hour, parked it, cranked it up again and went somewhere about ten minutes, parked it, got out about a half hour later and it cranked right up, drove back, parked it, and when I tried to crank it up about four hours later, it would turn over and turn over but wouldn't start, catch, or even try to start. It will still turn over all day long, as long as you keep the battery charged up, but won't start. I was wondering what's the most common part of the ignition system to go bad, the ignition module, or could a coil fail suddenly?

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  • mountean Nov 18, 2009

    Interestingly enough, it was the coil. I had little to no luck in diagnosing this, despite your information. This specific car and ignition coil can and often does, according to a dealership mechanic, fail suddenly when the spark plug gap becomes too wide. It arcs to ground through its own plastic housing rather than jump a .090 gap on the worn plugs, and continues arcing rather than send the spark on to where it is needed. Look for any signs of a burned spot after taking off the metal shroud around the coil. The resistance factors checked out, just outside of tolerance specs.
    Coil replaced, back on the road, thanks to everyone.

  • Valentino Lujan Nov 10, 2013

    I'm having the same problem . But I replaced the coil, ignition module , distributor and crankshaft positioning sensor and still not getting any fire.

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What are you wondering is correct. Let check the coil first. if coil is good the there is a problem with the ignition module. If the ignition module is good then a problem with the crankshaft sensor. The coil can be checked by measure resistance of the terminals of the primary coil and secondary coil separately to see if it open. To check if it can generate a spark, once you identify the primary coil terminal, run 12 V wire to these terminal, connect a spark plug to the secondary coil, by just leaving a spark plug with connected with spark plug wire and let it touch the engine chassis. Now you have to make pulses at the 12 volts connection by making a break and connection several time to turn it on and off to generate the spark at spark plug. The ignition module is supposed to do what you are doing now to generate the spark. If it is bad, it can't do what you did then a spark is not generated. For the crankshaft sensor, only the shop can tell you it is bad or not. Good luck.

Posted on Nov 15, 2009

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