Update with pictures as promised.
With Cummins unwilling to look and see if the problem resulted from the leak from last year and the pump costing $8,450, I needed to resolve this myself.
The first thing to do was to eliminate the possibility that I had a high pressure leak soaking the insulation.
I covered the top of the engine from the very rear of the A/C compressor to the very front of the engine with an oil absorbent rag. The injection pump is in front of the A/C compressor and the governor is in front of that, so the whole engine and suspected problem areas were covered.
I then closed up the engine compartment and drove the Motor Home about 15 miles, or twenty minutes, the route went from my storage place to my driveway. The route has several hills where the Motor Home has to work to get up them.
Backed it into my drive way and opened up the engine compartment and found no spots coming from under the rag, only spots where it was hard up against the soaked insulation.
So to orientate you, here we are looking at the rear of the engine.
Move in a little closer
Now it gets interesting, and when I was looking at this I did not realize what I now think it means until I saw the pictures. This is the area above the injection pump where we had the leak a year ago.
And a closer shot of the area.
This area is completely dry now, but to me it looks like the area was hammered upward. This area is directly above the connections that were loose a year ago. I believe this damage is a result of fuel under pressure beading the heck out of the insulation.
This insulation was originally glued in place and than had seven screws with large washers holding it in place.
To get to the screws out the air purge/expansion tank needed to be removed
I had actually had this tank out before as it had developed a leak and I took it out and had it soldered up.
Now I have room to get in to remove the screws holding the insulation in place.
Now I can remove the insulation.
I think there is a little fuel in the insulation.
This is the area that was directly above the governor and the area where I found the drip.
I actually found what might have been a good substitute for this insulation, but I elected to order the correct "under Hood" insulation. It should be here by 10:30 tomorrow. I purchased some lauan plywood that I will mount the insulation to. The original insulation was glued in place and when I pulled it down it left a thin layer of foam that the new insulation will not stick to.
I will have to make several small panels so that I can fit them up over the engine.
As I was dead in the water on this project I flushed the water system, and filled the fresh water tank. I had taken pictures of the valve settings last winter before I winterized other wise I would never have been able to figure out how they should be set now. They still make no sense to me.
Robert is coming over tomorrow to explain it to me.
The hot water heater fires up, which is good. My electronic gauges for the gray and black water no longer read once they are more than half full and the 3/4 mark on the fresh water tank does not light up. Yet another project.
So that is where I'm at right now. I hope to get the panels made up tomorrow and maybe installed.
