The 56 has a mechanical fuelpump like the 55 up to the year 2000, then it has 114hp with a fuelpump similar to the 4m40 and then again in 2005 or 2006 it goes CDI. Still the post '91 engines have at some point a lot of wires going into it and around it, like my '96 but I haven't got any clear answares on what they are. All the pumps are based on a Bosch VE design and the gen II's all have Zexel fuel pumps.

1987 SWB Pajero 2.5 TDI on 31" rubber waiting for a hip replacement and bigger shoes