i have changed oil and replaced vetch solenoid has not changed problem

Question

i have changed vtec solenoid  and car still runs rough and wont idel

Answer 1

Any top engine noise, the VTEC is popular for starving the cylinder for oil. If you have a VTEC failure the valve timing is fixed at a fully retard position. besides the VTEC solenoids there the VTEC oil pressure switch that should of been replace with it.