I got B18C-R swap on my civic. i got few problem especially with the idle and smoke. Everytime i rev my car to 1500 rpm the idle start fluctuating badly but after pass 1500rpm, it backed to normal. I already cleaned the IACV but still doing it. Also everytime i shift the car at low rpm it start blow some smoke through my tail pipe. For info my engine burned some oil. Can somebody help me? thanks in advance.

 

probably piston ring or ur head gasket has a leaked and oil and water is coming into da cylinders.. when u start ur car in the morning does ur engine automatically goes to idle up rev or the idle is very low and u ned it to rev litle bit just to idle up..

 

when i start the car the idle look normal. do you know what happened if everytime i rev at 1500rpm its fluctuated. thanks

 

probably the engines timing is not timed correctly.. correct me if im wrong for what i know is when u rev ur motor then the rpm is delay or fluctuates this mean the timing is not correct. try to get it diagnose in local shop near you so you'll know whats wrong just to be sure..