Quote:
Originally posted by mhingram
It was a shot in the dark sometimes the injector pump can make a noise and as it is tied to the rpm of the engine it will be in sync with acceleration and match your engine. If I remember correctly the vacuum pump is also right behind the injector pump, so either could cause the noise as they both are connected directly to the engine and will vary with engine rpm. The hard part is isolating the sound, I think you are on the right track there to fix this you are going to have to pinpoint the sound exactly, not easy on an MB diesel.
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If it is in the IP or the vacuum pump, then I won't worry about it. These items will not be as serious as an internal problem if they should quit. An IP or v-pump won't cost as much as an engine to replace but an IP will still run a few $100 to replace.
Right now there is too much snow and ice to drive the 300D, so I'm back to driving my tried and true Tahoe and it'll go anywhere. The Benz can't get enough traction in the slush to keep the rear wheels from spinning.
