As some of you know I just bought a 2004 320d and am getting rid of the swirl flaps. With the manifold off I can see that the glow plugs cannot be changed with it in place.
If a glowplug were gone would there be a warning light on the dash? The car starts fine, but its will warm so you can't tell if they are all working. I don't want to replace them unless I have to as the last thing I want is to snap one off in the head....
While I'm here, with the swirl flap delete do I have to keep the actuator for them or do you remove it and block the vacuum pipe?