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Hey guys ive recently bought an r34 gtt as I wanted to upgrade from my r33 gtst if had a random misfire and have been trying to locate. ive had multiple problem along the way replace spark plugs gapped to 0.8mm checked coils cleaned afm then we checked the cas which is where ive come undone. we used a timing light to find the timing and on inspection it seemed to fluctuate every few seconds 10 degrees 15 degrees 20 degrees and was random and intermittent between these said numbers keeping in mind tps and thing wghere still connected.. So I tried another method instead of using the loop at the back of coils I put a bit of wire in between spark plug and coil which is where it all changed. I had unplugged tps and all and when I connected timing light to wire it pulsed but no marks were visible so we adjusted cas and then the lines started to come to the mark but rand out of legs before coming close. so I ran a diagnosis through a wire bridged in the consult and it came up with 1 slow engine light and 7 quick. what the hell is a code 17 I have searched to no avail and everywhere leading me to a dead end. please can some one help with either the code 17 the tiny misfire or help with the cas and how to time correctly. thankyou in advance every one..... Sam.