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1992 300D 2.5 Turbo Injection Pump Question

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Old Sep 27, 2021 | 08:14 AM
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1992 300D 2.5 Turbo Injection Pump Question

Hello all! I just purchased this car and drove it 3 hours home. After the drive I looked over the engine compartment and noticed there appears to be some diesel fuel seeping out from the bottom of the injection pump. The delivery valve seals were replaced by the prior owner and the top of the IP is completely dry. Is there something on the bottom that could be causing this? If so, is it an easy fix? Any help would be much appreciated. I am attaching a picture to illustrate this. I circled in yellow the areas that have the most fuel, and on the engine block where it's running down.


Last edited by 300SE1993; Sep 27, 2021 at 08:27 AM.
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Old Sep 27, 2021 | 11:34 AM
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My first guess would be that you have oil leak under primary fuel pump, but nothing shows as very active, so I would clean the area and wrap it with paper towels to pinpoint the leak.
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Old Sep 28, 2021 | 08:45 AM
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Originally Posted by kajtek1
My first guess would be that you have oil leak under primary fuel pump, but nothing shows as very active, so I would clean the area and wrap it with paper towels to pinpoint the leak.
That is a good observation and suggestion, thank you. I wiped it down and drove around yesterday. If there is a leak at all, it is very very slow. I will keep my eye on it.
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