[starrtraveler]

Hello, I just recently purchased a 2003 VW TDI and would like to check if my timing is advanced enough. Car is starting hard unless it's below freezing and the glow plugs stay on longer than a half second. Would appreciate anyone that can help in my area.

Wade

 

[chittychittybangbang]

Try unplugging the coolant temp sensor on the head coolant flange (driver side). It will trick the computer into giving maximum glow plug duration. The timing could also be a major cause.