[AT] cub / prime oil pump

[Ronald L. Cook]

It is probably a good thing you don't overhaul my aircraft engines.

Ron Cook
Salix, IA

>Mike the bearings in the engine have residual  oil in them the engine will
>run for quite sometime without oil pressure. When  you  tear down an 
>engine even
>one that has set for a long time you will  find that the bearing are still
>covered with oil. The manufacture has built this  into the engine because 
>they
>know that people will leave their vehicles set for  long periods and then 
>jump
>in and hit the starter. It only takes a few seconds  for a properly working
>oil pump to get up to pressure.
>I have heard this  priming the oil pump by all kinds of methods because
>people have been told by  others who don't understand how an engine works 
>that they
>will destroy the  bearing if the engine doesn't get oil pressure immediately,
>but this is just  another old wives tales. Do you think that the car
>manufactures prime every pump  before they start your new car engine. Not 
>on your
>life. They coat the bearings  with oil before installing them and this is
>sufficient to start the engine for  the very first time.   I have rebuilt 
>many engines
>in my life and have  never primed a pump yet and have never lost a bearing
>waiting for the oil  pressure to come up.
>
>Walt Davies
>Cooper Hollow Farm
>Monmouth, OR  97361
>503 623-0460