Re: [Chrysler300] Chrysler 300 Hurst oil pressure

[Mike Apfelbeck <moparmike@xxxx>]

Steve,
Sounds like the oil pump lost its prime. You could remove it and pack the 
gears with white grease or Vaseline to get things restarted.The dealer 
should have an "oil pump repair package" for a few bucks that contains all 
the gaskets and "o" rings needed to service the oil pump. A long rotor, 
high volume pump is available from Chrysler under part number P4007177.
I like to use a high volume pump, with a stock bypass spring inside, to 
maintain stock oil pressure levels. Excessively high oil pressure in a 
stock motor gains you nothing in the long run, it puts extra strain on the 
distributor drive gear and takes more power to maintain (can actually 
reduce gas mileage).Be careful about paying big bucks for a "high 
performance " pump, sometimes these are just made up from standard castings 
with stiff springs in the bypass for higher oil pressure. A high volume 
pump should have a longer body than a standard one because of the taller 
gears inside.
Mike


At 06:10 AM 12/2/2003 -0500, annbarbq@xxxx wrote:

> Any suggestions on resolving this oil pressure problem? I considered
> removing oil pressure sending unit and installing mechanical oil pressure 
> gauge to
> confirm no oil pressure. Also I talked to NAPA about a new oil pump - 
> they sell
> a standard one, a high performance one, and a high performance and high
> volume. Which one to buy if it turns out to be a failed oil pressure 
> pump? Thank
> you. Steve in Columbus, Ohio.