Post #9 by cobbadog » Thu Jun 18, 2020 7:51 am
Either with time, patience and hard work you should be able to free up the stuck parts in the pump, I did on a big Lister engine. Or you can buy one at those prices. Unfortunately it is not getting any cheaper to do these toys up any more. I have spent so far way too much on an old crude oil engine but I want this thing running so I spend the money and don't think about it, not becasue I can but because I want to.
Cleaning your fuel system is not as hard as you think and starting with cleaning out the tank, remove the fuel lines one at a time and ensure they are spotless or replace them and you can make your own up cheaply using copper tubing. Clean out the fuel bowl and filter if any and then the rest of the lines to the pump. If it is stuck it is time to carefully work on freeing it up. Start with the least invasive process and work your way up. Start by soaking in diesel and every now and then try moving the parts, use electrolysis to help clean away the rust using a battery charger and an iron anode and washing soda in the water. If still no joy try automatic transmission fluid mixed with acetone. All of these processes will not harm anything but does take time. Again on a regular basis try moving the parts until they actually do move.
Do not strip the pump until you have a workshop manual with an exploded view of the internal and how they fit together unless you are an expert on these pumps. ALWAYS take pictures of every step you do when stripping it down to make sure it goes back together again in the same manor. With pumps you can assemble them wrongly and not get any joy out of it working so be very particular when stripping it. Manuals can be found by Googling your Engine make and model number and sometimes helps with the serial number as well.
Cheers Cobba