I ahve a 99 c230 and got the codes from the computer p1457 large evap leak. changed the cap, no difference. tried to perform a smoke test and I don't know how to close the cvs solenoid??
Is there any known problems in the evap system or does anyone have any info on closing and testing the cvs solenoid. The car has always been hard to fill at the gas station...possible orvr, but that shouldn't cause an evap leak???? any help would be appreciated!!!!!!