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.
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.
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