Hey guys. If you set your FP at one point and then the next day you find that the FP is no longer set at what you set it at the day before after just normal driving, what would something like this mean?
How much did it actually change by? It could fluctuate a hair depending on alternator output, etc. Much more than +/- a pound or so would be reason for concern.
Did you tighten the jam nut to the body after the initial adjustment?
I had the same problem in the past. It was a faulty fuel pressure gauge! I replaced the entire fuel system, with the pressure gauge being last, so I know from experience! Oh well, I needed the 340 anyway!
