broncomitch
Bronco Guru
I haven't seen a spec on the time but I believe it should maintain some pressure for at least a couple hours. 10 psi after 9 hours sounds real good. Time to chase the spark.
My fuel pressure drops right when I shut the motor off..
But turn the key back on it shoots back up to 43psi and holds there wile running..
Sometimes take 1 or 2 tries before she will stay running...