Greg Arehart
Well Known Member
No luck finding anything in the archives. I'm wondering what kind of variation folks out there are seeing in fuel pressures with the engine pump only. I am running a Superior IO-360 and my fuel pressures are generally between about 23 psi and maybe 28. Some days I see fairly constant fuel pressure, whereas other days the pressure seems to fluctuate a lot and may spike as high as 32-34 psi. All this is within limits, but the variation seems odd to me. I have not put a restrictor in the line as is commonly done for manifold pressure. I also realize that there will be some variation related to RPM, but the variation I am seeing is at much higher frequency than any RPM changes. Is this variability normal or something to worry about?
Thanks for any insights.
greg
Thanks for any insights.
greg