Maybe it is too much crud surrounding the glow plugs, you might need to ream out the chamber around them with a wire brush. Or maybe it's a slow leak in the fuel line, allowing some air in when the car sits, not connected with glow plug heat at all. Look at the little clear fuel filter and see if the air bubble grows when it sits overnight. Or better yet, pump the hand fuel pump 20 times before you try to start it to see if that solves the problem.
--- In diesel_mercedes@yahoogroups.com, "Nate" <vwnate1@...> wrote:
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> Does it hard start when the engine has been warmed up a bit ? . when warm , the engine should roar into life in less than one revolution .
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