Ok, but the picture shows a common rail design, with high fuel pressure going to all cylinders at once, I thought they were HEUI unit injection? Where engine oil is pressured to 23,000 psi, and each injector uses that pressure to fire low pressure fuel into a cylinder at high pressure. Maybe the schematic is not showing all of that.
My old farm tractors wouldn't give a crap, but these new fangled truck injection systems sure as Hell do. I would definitely drain as much of the 2/3 gas mixture out and fill with fresh diesel and add two doses of lubricity additive. Replace the fuel filters too. A little gas is tolerable, but 2/3 of a tank ain't gonna cut it.Can't believe I'm typing this because I've never even come to making this mistake. I stopped to fill up on the way home. Had to do a 8 point turn just to fit into the spot next to the diesel. Dude in front was chatting with me as I went to pump the gas. We own all gas vehicles and I just wasn't paying attention and grabbed the 87 and filled it up. I had about 10 gallons of Diesel and added 20 gallons of gas. Didn't catch it at the time and drove it home (3.5 miles). It started sputtering a little when I was pulling into my driveway. Parked it and shut it down.
Thankfully, this isn't a regular use vehicle but I need to resolve the issue. Hope I haven't already caused major injector and lift pump damage.
I've done tons of work on the engine myself so I think I can drop the tank and start to try and resolve this.
Any tips/thoughts would be much appreciated.