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Hey fellas, hope you're all well so here we go I need help I rebuilt my R33 series 2 GTS-T from the ground up. The rebuilt motor is having trouble starting and idling. Rebuilt RB25DET series 2 Car kicks over then cuts out straight away, like its starved of fuel. Then when you try start it again it gets really compressiony doesn't want to start. Leave it for a min and it will, but with horrible misfire, eventually sorts itself out but not fully, hunts for a bit. Doesn't sound like it's running on 6 cylinders. Head got rebuilt, had no issues with old one, piston rings were finished so I had to rebuild it Compression ratings at 140 across all 6 Seems to be over-fueling but it's always run rich. I've checked the: Coil pack loom, tested fine Fuel pressure fine Oil pressures good Spark is fine Timing is spot on New - Walbro fuel pump - Saads fuel reg - Iridium spark plugs - AFM - K&N Oil Filter - Gates timing belt - Nissan water pump - Nissan thermostat Old (off the motor before rebuild, but were working when dismantled) - GCG high flowed turbo - GCG FMIC - Injectors and rail (standard series 2) - ECU (standard series 2) - Intake manifold (inc AAC) - Exhaust manifold - Exhaust - BOV - Alloy Radiator - Cam shafts - After market boost controller - CAS - Pod filter - Splitfire coilpacks (haven't travelled more than 3000km) Any suggestions for me to test? I'm trying to organise a new CAS to test. We were test driving the car all week in our workshop carpark after we installed the new reg and it was running really well, but was doing this same thing over a week ago. Kinda reverted to doing the same thing again unfortunately. Id appreciate any help with it, it's so close but so far omg Thanks for reading Marni