Reason why my old man replaced the fuel pump was because he just replaced the fuel filter like 4-5 months ago (only drives this car to work and back) (30 miles a day). I for example told him not to replace it because i thought i saw enough fuel coming when we cranked it and had the fuel line unscrewed by filter bolt. But he had a spare from his other Mercedes so he gave it a try.

No this thing doesn't run WVO and never did, i wish though. When done properly it can actually prolife the engine if the oil is de-water and clean correctly with the correct system installed.

As side WVO, what concerns me is it will not even fire for a second on starting flulid. This starting fluid is made for gas and diesel einges so it should be safe to use unless the company of starting fluid wants to get suid by happy sue people. Thanks for the W40 tip though

Someone mention the tank area? There is another filter their?