Hey just had my valve seal replaced and it now idles high seem that the air flow meter need replacing whitch is no worry but cant seem to find what i've been told is the non-return valve???.... It's the the valve with the white cap on which is split my car is running rich in fuel and when the screw is turned on the air flow meter it dosent do anythig any more so hopefully changing these to thing should sort it and any comment would be greatful.... thanks Pete
