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Old 12-01-2014, 02:43 PM
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Question OM603 engine, fuel leak and air getting into system.

just to check whether any one has the same experience. The car always needs 2 spins to start in the morning. It seems to be purging a bit of air in the IP or in the lines to injectors. It starts at first spin after that. There is no fuel leak I can see anywhere. Both filters are tight. So what could be the reason? I have read somewhere it could be air inside shut off valve, possible o-ring worn?

thanks.
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Old 12-01-2014, 04:12 PM
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Replace the fuel lines and o rings. I am going on memory here but if it is like the 98 e300 there is an o ring between the shut off valve and ip that will need to be replaced too. You won't see any leaks.
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Last edited by engatwork; 12-01-2014 at 04:23 PM.
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