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I have a misfire on cylinder 1 unyet i have 4 great sparks with ignition timing and valve timing checked.

I'm clutching at straws i know, but is it possible to have a long reaching spark bridging 20mm or so but still not be suitable for ignition? Or to put it another way - is it possible to have ample voltage in the 1000's of volts but somehow not have enough amps for ignition?

Michael Sherpa
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Inside the cylinder is quite a hostile environment. What looks like a strong looking spark at atmospheric pressure outside of the cylinder can become nothing at high pressures in a fuel rich environment during the compression stroke inside a cylinder.

So Yes, it is possible to have a good looking spark but but still not suitable for ignition. This is especially true if the electricity finds a much easier place to arc away from the spark plug.

HandyHowie
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