i have a ninety three honda civic with a b16 motor. the problem i am having is when vtev engages i get a misfire when i unplug vtec i am good but hwen i plug it back in misfire and a clicking noise in the head. i change the whole distributor had a shop check the wiring same thing happens should i just replace the whole head or is the vtec solenoid getting stuck

 

Any CELS? Any mods done?

 

cel 14 just header stage 1 skunk 2 cams injectors exhaust nothing major hondata s100