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hello SAU. i've just brought my first car, a skyline of course. I've had it for a year now with litte problems. although its only a stepping stone for my skyline I take alot of care maintaing it as best i can with my engineering and servicing experience. its a r33 1997 gts25 import with 180000ks recently after returning from overseas my car has had a painfully rough idle and warm start up issue only below 2000 rpm. the engine feels as if its missing or almost stalling randomly at any stops especially. i was attempting to replace the gaskets and polish the head lights and foggies before i started it the first time. so i cant tell if its something ive done or its happened while i was away. when it was being started and driven once every 2 weeks. i took out the coils and plugs, cleaned and inspected them while sealing all the valve cover everything seemed fine. i've tried everything ive reasearched so far and nothing seems to work it has no fault codes. i cleaned the AAC and the MAF but found no change. the plugs and coils seem fine only one with a small crack in the ceramic and another coil with some oil on the outside of the boot but no noticeable firing issues. i do have a power steering leak and it moans when its cold. hence the AAC check. Please help cheers!