You're right. It's not like older diesels where you find yourself waiting 20 seconds or longer when it gets really cold. The short duration light is normal. I believe the plugs will still glow without the light under certain conditions. I think Jon and others have knowledge of this.if my pre-glow time is 'normal' because such a short pre-glow time is not common among other diesel engines (no prior experience w/ CRD's).
based on responses thus far, it is normal. thank you.