I have finished putting my Yanmar
4JH2HTE back together after taking everything bolted to it off, cleaning
off all the exterior rust and painting everything. The engine
room and bilge
now look like new... or at least they did.
I have also installed a Filter Boss Commander dual filter and pump system.
I did not remove the injection pump from the engine
but I did remove the engine fuel filter
and all the injection pump hard lines. Everything was carefully masked and cleaned and then reassembled.
The Filter Boss has an electric pump
, as per its instructions I have that pump running and I have been attempting to bleed the injection system as per the Yanmar
Its impossible. No matter what I do, no fuel
will come out the hard lines at the injectors. Not a drop. No air that I can tell either.... loosen the nut, nada. Plenty of fuel
pours out when the fuel attachment at the injection pump from the engine filter is loosened and plenty of fuel squirts everywhere when the return line at the engine filter is bleed.... so it would appear that fuel is flowing through the injection pump but it is not going down or through the hard lines to the injectors.
This is maddening! I have gone through 3 rolls of paper towels and what seems like gallons of diesel
. The entire boat reaks of it now and my once like new bilge
is again a diesel
stinking mess. Everything has seen diesel at this point.... except the injectors.
What gives? The engine ran like a top before tackling this project
. I am at the point of having to call a mechanic
as I am out of ideas.