Fuel Pressure

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02-06-2017, 05:02 PM

Chuck Schexnayder

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Fuel Pressure

Let me know what the fuel pressure should be in a 2005 XK8, 4.2, or tell me where to find it, I've looked everywhere.......but maybe not in the right place.

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Last edited by Chuck Schexnayder; 02-06-2017 at 05:06 PM.

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02-06-2017, 08:36 PM

ccfulton

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55psi differential from manifold pressure.

The obd meter should show 55 give or take 1. An external gauge will vary depending on the vacuum level. At idle it is probably around 45.

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