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Hi guys, New guy here looking for some advice on where to go next in my diagnosis. I have a '96 R33 GTS-T pretty much stock, it started running a bit rough a couple of months back but i only just got off my ass to investigate it. So i checked my spark plugs, found cylinder 6 was black/ oily. I did a compression test, the first 5 cylinders showed 120psi, but the 6th cylinder showed only 20psi....... yes, 20. We didn't have a proper cylinder leakage tester but i had a connecter and plugged an air line into the spark plug bore with the engine at TDC and air came rushing out of the pod filter. So obviously there is a problem with the inlet valve/s on cylinder 6? I was hoping you guys could give me some insight into what the actual problem might be and how i go about confirming and rectifying the issue? And will i have to replace rings as well? Im not sure where to go from here and how much work im looking at. I was planning on selling the car soon so i dont want to spend too much time and money on it. Your input would be appreciated, Cheers, Sean.

Hi guys. mechanic by trade and ive hit a brick wall. ive got my track 32 gtst with a stock rb20 running stock ecu. problem ive got i have signal wires to every coil coming out of the ignitor except to cylinder 6. Have swapped ignitor modules same thing. There are 6 signals into the ignitor but only 5 coming out. Have swapped the coil harnes and same issue. Tried switching coil packs. Same thing. Injectors all been serviced and tested with a noid light. Caat find any answers using google. Have talked to JEM and im awaiting ADAM to get get back to me. This problem has been there since day dot. Car was a $400 shell and ive built her from scratch. If you need more info on the car just click the link in my sig to save me typing the whole thing up. Cheers.