I have a 1991 300D with low power. I have narrowed it down the injector pump. If I run a new line directly from the manifold to the alda there is still no fuel enrichment. I even used the my air compressor to simulate turbo boost and nothing happens. The diaphragm is not leaking. Is there anyone here that has dealt with this before? I suspect the previous owner was told that it would be expensive to fix. I bought it figuring it was just a plugged line. The car is perfect in all other areas.
I posted a thread earlier stating the 0-60 times were low (17 seconds) and it should be 12.