02-20-2015, 12:45 PM
Perhaps a bit of debris inside the ping tank connection that dislodged & fell back to the bottom of the tank when pressure was bled off to replace tubing? I once spent 2-3 days tracking down an intermittent fuel supply problem. Engine would starve out & die. Then run just fine for a while & repeat starving. We changed filters several times to no avail. Finally found a dead honey bee that was getting sucked up in fuel intake causing the starvation problem. As soon as the engine died, gravity would drop the bee back to bottom of tank until convection currents in the tank brought it back to the suction intake. The fuel intake did not have a screen on it.