Not sure what this means but here it goes. On my last tank (2 weeks maybe) my mpg dropped from 40-45 to 34-36. I've been using the Conoco that's on my way to work and also happened to be the cheapest in town (1.69-1.79/gal the last couple months). I thought maybe it was bad gas so I figured I'd try someone else next tank. I also looked at my maintenance records and noticed it has been 15,000 since an air filter change so I bought a new one. When I installed it I noticed what looked like mouse/rat droppings on the intake side of the filter. Now I'm thinking oh hell maybe I have a dead rat stuck in the intake duct which is messing with mpg . . . but I'm still gonna wait til next tank. Today I go to fill up on that "next tank" and the fuel nozzle immediately clicks off whenever I squeeze the trigger all the way. I finally found a slow speed that it would go in. I typically put in 7 gal on a fill up (from one blip on the fuel gauge) but this time I got up to 8+ and so I pull the nozzle out and gas comes gurgling out and spilled all over the ground. It looked like the gas inlet was burping over and over. So my question to y'all is "WTMF'ingH" is going on there? Car runs perfectly fine.
Best to go to another pump when that happens, and if they are all the same model nozzle at that station, go to another station. Sooner or later we all run into a nozzle that will do this. In some instances a problem nozzle will give a normal fill by putting the nozzle in upside down, or at least it will let in a few gallons. Best not to push it. You probably overfilled the tank using the slow method (you already knew it wasn't sensing right...) which is why it burped gas back out.
So my question to y'all is "WTMF'ingH" is going on there? Car runs perfectly fine. If you run the flow rate too low, the auto shut off on the fuel pump will not trigger correctly. That's one reason I avoid using the first latch setting on most handles. You just never know.
As in, it will overflow? I always use the lowest flow rate setting on the nozzle and have never observed an overflow like that. With the exception of the Prius I have also never seen an early shut off. That's more than 50 years of filling gas tanks, somewhere north of 1000 fill ups. However, it represents far fewer nozzles tested since I tend to use the same pump at whichever station(s) I am frequenting at the time.
