Date registered: Dec 2006
Vehicle: 1986 560 SL
Location: Sarnia Ontario Canada
Mentioned: 9 Post(s)
Quoted: 849 Post(s)
I didnít know there is a filter in the FD inlet line. Is it just a metal mesh? Could it be improper in some way or clogged somehow? Perhaps try running without it, as the upstream fuel filter at the pump cluster should be effective on its own.
You say you loosened the injector lines to purge any air. Did fuel weep from all the junctions? If not, perhaps some debris entered the FD when you removed the old filter?
You say there is fuel pressure. Did you actually measure it to see if it meets spec?
I dont see any movement in the intake plate until you push the pedal. I believe it should open slightly when you crank the starter.
Sometimes there are multiple coincident faults in old cars. Something else unrelated to your filter change may have occurred by chance. It certainly presents as a fuel supply problem but I would pour a little fuel directly into the intake to confirm.