This is the conduit where the vacuum lines for the central locking pass on the 280SE 3.5 Project… pretty neat and an example of the over engineering on Mercedes of the past.
The 6.3 was misfiring badly under acceleration. a big disappointment for the owner ,who had spent a lot of money getting the injection pump rebuilt and the ignition converted to electronic . So, when working under thecar replacing worn rubber joints and worn drive shaft parts I spotted the squashed fuel line .The picture on the right shows a really bad dent in the main fuel line . The entire line will have to be replaced ,and i am thinking this is probably the cause of the misfire
The Drive shaft with it’s new staked unijoints and rubber center support bracket .