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86 rx7 no spark on leading coil

Old 06-16-13, 06:38 PM
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It's likely the coil, but you're likely not measuring the voltage w/key to start and the ECU is what fires the coil so it has to have the proper power w/key to start. And did you ever test the trailing coil? If it works properly then of course your problem lies within the coil/igniter.
Old 06-16-13, 11:20 PM
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Yea the trailing coil seems to be firing fine!
Old 06-17-13, 12:30 AM
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Then it's obviously your leading coil/igniter.
Old 06-27-13, 06:37 PM
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Put new coil on and I'm now getting spark to every plug but still no start, tried using starting fluid with no luck.
Old 06-27-13, 07:13 PM
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Have you checked compression? Are the plugs wet w/fuel? If you try to deflood the car w/the plugs pulled and EGI fuse pulled can you tell if there is coolant in the fuel or not?
Old 07-01-13, 06:59 AM
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Everything I could find online about checking compression says to start the car and get it warm. I tried deflooding it because the plugs did have a little fuel on them. I cant tell if theres coolant in the fuel.
Old 07-01-13, 08:45 AM
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Originally Posted by Sammy Epperly
Everything I could find online about checking compression says to start the car and get it warm. I tried deflooding it because the plugs did have a little fuel on them. I cant tell if theres coolant in the fuel.
But you can still do a compression check.
Just rolling the engine over with a tester in it will give you a real good idea if there is a decent amount if compression.
The reason for doing it HOT is to get a more accurate reading.
Old 07-01-13, 10:22 AM
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What kind of reading should I get?
Old 07-01-13, 11:38 AM
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90 and up is good.
Google compression Check on a rotary or search the forum,there is tons of Info at your finger tips on this subject.
Old 07-01-13, 11:41 AM
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If your plugs were wet they might be bad and in need of replacement. Sometimes when they are wet they are trash material while at other times they are still good. Some people will dry them off w/a hair dryer or heat gun in hopes of making them good once again.
Old 07-02-13, 06:12 AM
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Giotto looking at the plugs and someone had just replaced them but they were all 4 trailing plugs so I'm going to get two leading plugs and try it. But two of the plugs look perfect.
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