I don’t know why my projects seem to go south and cause me more work, frustration and stress.
My wife seems to think it is because I thirst for knowledge so much that I attract issues to have to solve. I can do with less issues.
Now for my dilemma/issue.
Last night when I fired up the coach I detected my fuel pressure was much higher than it should be. It was showing 26.5 PSI when it should be around 16-18 PSI max.
I checked the obvious things such as hose routing to make sure no kinks and ensured no tie wraps were too tight and anything else I could think of. I was 110% confident in my hose routing as far as connections and sequence of components and that all hoses were clear of obstructions.
This morning I made a call to FASS tech and the first several things he told me that cause this are tight bends in hoses and debris blocking hoses. I’m sure he hears this all the time but I tried convincing him that I was **** about all of the above.
I then asked him if there is some form of check valve or pressure relief and how the pressure is regulated. He informed me there is a spring and shuttle valve behind the return fitting and that’s how they control output pressure. I said that’s probably where I should start but he was confident it was something I had done during installation.
I removed the return hose and then the fitting shown here.
After removing the fitting and spring I used a mirror to inspect the shuttle valve. After some coercing with a small pick I was able to remove the shuttle valve.
Fitting, spring and shuttle valve removed and in order. Upon using the fingernail test I detected a very small Knick or burr on the shuttle valve. I ever so slightly kissed the edge with some 400-grit emery paper then cleaned and reinstalled everything and lastly torqued the fitting to 40 ft/lbs.
Reconnected the return line and bled the air again before starting the engine.
Success.
Gauge is rock solid at 16.5 PSI.
Glad that’s done and I guess I can chalk it up to another “learning experience” as my wife says.
After completing the work on the coach and putting tools away I decided to quickly repair the landscaping rake that a friend dropped off and asked if I could fix it. I told him I thought I could save it.
Someone attempted to repair it once before by half *** welding a wing nut on it and bolting through the tines.
I dug through my scrap and found a piece of 3/4” square that I could cut down and thread.
Found center to drill and tap for a 5/16”-16 thread.
Clamped and ready for welding.
Welding completed.
Painted.
Completed.
Overall a productive night in the shop.