Quote:
Originally Posted by Dleslie212
I have a mechanical gauge on mine, although it’s a cheap one. But I’ll start off with around 40-50 psi when cold, and after running awhile can drop as low as 5-10 while idling. How big of a problem is this?
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It’ll become a bigger problem. That’s an indication of high bearing clearances, so you most likely have worn main, rod, or cam bearings in your engine. An engine can live at 5-10 psi at idle, but it’s an indicator that it’s a good time to think about a rebuild.