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i have a good code reader and it says that the fuel rail pressure when running is 2.77 kpa how much pressure is that any help would be great. its a actron cp 9180 code reader
2.77 kpa is .40 psi. how is that enough for the truck to run. it runs fin unless you wot and it spit and stumbles at 3000. new maf new plugs and new o2s. any help would be great
well the old one had lots of brown fuel comming out of it. the first one had a blade of grass in it. wtf is that about. but hows it run with only .40 psi
You are correct that 2.77 kPa is .40 PSI. I'm not a gasser guy, but that's barely enough pressure to measure, much less run an engine on.
I've seen a few instances where OBD-II readers will read a value and then incorrectly assume a unit of measure. I don't know what the 2.77 represents but I really doubt it is kPa. You need to find a better way to read fuel pressure.
There should be a fuel pressure test port on the fuel rail. There has been on every fuel injected gas engine that I've seen. But like I said, I'm a diesel guy, not a gasser guy.
You might need to go down the forum specific to the engine you are working on. There would be more expertise there.