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I have a 1987 200SX with a CA20E engine. It will start and run on only two cylinders. Both coils are getting juice and both are putting out spark. I have put new wires, plugs, cap, rotor on it but to no avail. Cylinders one and two are operating normally, three and four are not. Pulling a wire off either one or two and the engine will die. Pulling a plug from from three or four and it will be wet and clean.
If anyone can offer any suggestions as what to do to correct this problem, I would greatly appreciate it. I need to get it running as soon as possible.
Thanks
 

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If your getting spark from three and four but no compression, smell the plugs for coolant odor. Could be a headgasket leak allowing coolant into the combustion chamber at just enough to eliminate spark. It's happened before on one of my older cars. If they smell of nothing but raw fuel, you could have blown the piston rings. Just some thoughts.
 
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