MAFF electrically disconnected should allow the engine to adopt a fail safe running setting. check the distributer re wear and function vacuum etc Fuel lift pipe in the tank. excessive cranking could indicate fuel flowing back to tank, insert a one way valve. Should be able to plug a diagnostic tool in to see if you have any issues. How did you check fuel pump pressure? Injectors might look alright but need testing. You can do a rudimentary check by inserting each injector in turn into a plastic bottle and observing the spray pattern but if not confident get a fuel injection specialist to do it for you, remember its partially vaporised fuel so preferably outside!
Got called away! Do a compression check, dry then wet. Dry will give you a ball park figure and wet will ascertain if its piston issues ie. leak past. For wet I use about 10-15ml of paraffin or diesel. oil I find can give problems when getting it started later. Time I think to start checking it starting at a base level and then building from there.
Last edited by sewin; 21/05/25 12:04 PM. Reason: needed to add information