Ugh, been getting a bit of hesitation & rough running & some backfire on my 427 Fontana Fuel Injected car. I see in 2011 I replaced both fuel filters due to hesitation under load, but I didn't take note of the reading on the fuel pressure gauge reading before (rookie!). Today I had the wife stand in the back by the fumes while I ran it and she sees it is reading about 40 on idle and maintains at 40 with steady increase of the gas pedal which I see from some google searching is pretty much normal. Seems to have started back in Dec so I cleaned the plugs, but the past two runs seems to have started acting up again. I suppose I could pull a plug and take a look at that too and also be sure all is still connected, but is 40 pretty much normal for fuel pressure, or anything else I could look at? I guess I'm trying to talk myself out of a messy fuel filter change if not needed, but if that's all it is I suppose that's not bad from a financial perspective at about $100/filter.
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