View Single Post
  #4  
Old 02-05-2009, 10:25 PM
cerres cerres is offline
Dodge Ram Forum Senior Member!
 
Join Date: Feb 2009
Location: States
Posts: 153
Gender: Male
Vehicle: 2006 4*4 3/4 Quad, 5.9 Auto
Trim Level: SLT Big Horn
Color: Khaki
Rep Power: 0
Rep:12
cerres is on a distinguished road
Default

High idle is rather common. At start up, at low RPM, there's not enough oil being thrown onto the cylinder walls... high idle insures a sufficient amount of oil on the cylinders at start up, hot or cold...
If ever you have the opportunity to see the bottom end of an engine throw oil onto the cylinders at idle (they really do this via lexan windows in the pan or cameras mounted on test engines), you'd be shocked how little is actually getting to the cylinders!
Reply With Quote