Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - possible blowby?
View Single Post
  #15 (permalink)  
Old 01-13-2013, 02:27 PM
MouseFink MouseFink is offline
Registered User
Join Date: Jun 2010
Location: TX
Posts: 2,421
Wiki Edits: 0

Thanks: 27
Thanked 260 Times in 243 Posts
Standard idle sped is 650 to 700 RPM in Drive, no matter how much mileage the engine has. If the oil pressure is less than 10 PSI at 700 RPM, it indicates that the engine has worn out main bearings.

The red oil pressure "idiot lights" back in the 1960s were calibrated to illuminate at 7 PSI.
Reply With Quote