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Pressure drop on the hot engine
Problem car is Ford F250 2004 Powerstroke 6.0, and it has ceased starting with its engine hot whereas when the engine is cold it still starts at once, the computer showing pressure of 900 psi (300 psi with hot engine respectively).
After starting the engine stops after a while.
We replaced the oil pump, but the problem remained. Nothing has changed.
Breakdown progresses. A month ago on the hot engine was 370 psi, now 307..
Can be a problem in the oil valve?
Sorry for the bad English.