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Fuel Pressure measured at fuel rail fitting 700 1991

Look for 36± at idle.

With the FPR vacuum hose off and plugged, pressure should rise to 44± when hose removal simulated Wide Open Throttle (allows the FPR to "feel" atmospheric pressure rather than engine vacuum).


--
Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.






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