ok guys heres the deal ive had my EK w/ b18c5 for 3 weeks now, only mod is short ram intake. For about the last 2 1/2 weeks everything has ran great!! but about 3 days ago my car started hesitating and that same night we got a ton of rain and car was hesitating VERY BAD. then the next morning after the motor warmeed up and was idling the rpms would drop very low (about 200-400) and shake very badly, but the hesitation problem while driving went away. later on in the day the idleing problem became less constant. Now today it drove fine all day, but the idling problem happen once again on my way home tonight! Now the motor has around 25-30k miles on it. i know when you swap a motor you should always have it tuned. Well it hasnt been, but why is it just now all the sudden running like this insted of beeing a problem for the past 3 weeks! it also blow dark gray/black smoke at WOT so im sure it needs some fuel tuning. But what do you guys think!!! let me know ASAP!!!

 

have you changed spark plugs, cap + rotor, or fuel filter? also, adjust the idle to see if that's it.
oh, if you're at 30k and haven't serviced it, do all of the above and get a valve adjustment.

 

no i am gonna do a tune up liek you mentioned. but the things is it just really puzzles me why this problem came up just within a day! valvle adjustment at 30k already, just didint think they had to be don so soon. how much does that run to have done??

 

night time bump

 

mourning bump