W115

1975 240D Auxillary Fuel Pump Veggie Oil

I installed the mercedessource auxillary fuel pump 3 years ago, works great. Just got car back from mechanic and now the pump is constanly clicking every half second to one second. Like it's not building up pressure.(He should not have been anywhere near the pump or wires) Before it would click fast until it built up pressure then slow down to one click every 1-2 seconds. No leaks, so fuel is not being pumped out. Car runs fine but the pump isn't performing like before. What should I to look for?

Chassis Model Number

W115

Forums

SVO Fuel Conversion Specific Aid

$3.75

615 616 617 Diesel Valve Cover Wave Washers x 8

All 200D 220D 240D 300D 300CD 300TD 300SD 1964 to 1985

1976 240D Manual Trans Stuck in Gear ??

Out of the blue, I am driving home and the gearshifter will not allow me to change gears, more like to get out of what I believe is either 2nd or 3rd gear. Anyone have an answer on what it could be? I don't want to have to get it towed and fork over $$$ to a mechanic, but if this isn't something I can fix myself, I guess that I will have to.

Chassis Model Number

W115

Forums

Transmission / Suspension Specific Aid

1976 300D won't run after engine swap

Swapped bad engine ( timing chain failure) w/ used running engine (125k). Donor engine has been sitting for 2 yrs. Project car has been sitting for 4 yrs. Did the swap w/ mechanic friend who started engine in my absence before I could change filters, flush fuel etc. Car started and ran rough for 5 minutes then stalled. Has started and ran roughly a few more times. Now will not start. Changed filters, cleaned screen, tried to start on purge only, bled lines, replaced glow plugs w/ ones from bad engine ( they were new @ time of death). Wants to fire but won't.