Has anyone disassembled the valve itself? There are 4 torx screws for that, but the valve doesn't seem to go apart after losing the screws.
Image source: http://typeaccord.co.uk/forum/topic/722-intake-manifold-and-egr-cleaning-on-i-ctdi/?p=7613
The problem: valve is cleaned and shines like new, but still doesn't close fully. When looked in dark with a flashlight I can see the light coming through the valve. It closes when turning the piston around a bit, but will stay open again next time. Just as the piston rod was bent somehow.
Image source: http://typeaccord.co.uk/forum/topic/722-intake-manifold-and-egr-cleaning-on-i-ctdi/?p=7613
The problem: valve is cleaned and shines like new, but still doesn't close fully. When looked in dark with a flashlight I can see the light coming through the valve. It closes when turning the piston around a bit, but will stay open again next time. Just as the piston rod was bent somehow.