Oil filter wrench size for a ssangyong actyon 2010 very hard to get to

The loss of fuel pressure does not necessarily mean an external leak. Your systems has a number of pressurised circuits. any check ball can leak and you will lose pressure.

Most oil sensors are located somewhere around the oil filter, which would be a good place to start looking.

it has an auto tensioning device (A.K.A. spring loaded pulley) ... if its loose after you routed like it was before... the belt is TOO BIG!

possible EGR valve problem, when this happens, vehicle will go into limp mode and cruise will stop working

Diesels shouldn't flood. If you ran it out of fuel you might have air in the fuel line. You can bleed the air by the fuel filter. This should help.

now you get wrench ADJ.

The oil filter for the diesel Rexton is behind the engine block on the passengers side. If you remove the plastic engine cover and stand next to the passengers mirror, you will see the casing next to the firewall.

remove the black 'engine cover'
is 4 x nuts/bolts, one in each corner.
the oil filter is at the back right side looking into the engine bay.
you need a special oil filter removal tool if you can't remove the filter cover by hand.

I had a similar issue while driving the car at about 70 - 90km/h. I also had horrendous vibrations. It ended up being the original trans fluid requiring changing to a more superior product than what they originally came out with. The car had done less than 50000km.