I saw that the first time you sent it Sent from my iPhone
> On Apr 7, 2014, at 9:13 AM, Frederick Moir <fredy4.s...@yahoo.com> wrote: > > Re-sent, maybe it will go through this time? > > Fred Moir > Lynn MA > Diesel preferred. > > ----- Forwarded Message ----- >> From: Frederick Moir <fredy4.s...@yahoo.com> >> To: Mercedes Discussion List <mercedes@okiebenz.com> >> Sent: Sunday, April 6, 2014 2:36 PM >> Subject: Fw: [MBZ] 76 300D low oil pressure update >> >> >> >> Kaleb, et alia. >>> After thinking about your problem oil pressure scenario, I have a few >>> observations to share. >>> (The delete key is you know where.) >>> The video of the oil pressure vs the engine speed was thought provoking as >>> usually on 617 engines there is an over capacity of pumped oil, enough to >>> peg the meter by approx. 1000 rpm hot. >>> The conclusions that I came to were:- >>> >>> >>> I. There is some restriction in the oil pickup circuit to starve the pump >>> of sufficient oil thus the low oil pressure, >>> or an air leak reducing the pumps ability to suck up enough oil at lower >>> rpm. >>> You had stated that the oil pressure relief spring was OK, did you make >>> sure that the valve behind the spring actually closed off the bypass port? >>> Oil filter O rings? Worn pump or shrunken O rings? >>> >>> >>> 2. There is some massive leak in the oil delivery circuit beyond which the >>> oil pump is unable to supply enough oil until the engine turns 3000 rpm >>> plus. >>> Internal leaks as described by other Listers. Badly worn bearings, broken >>> or cracked cam towers, gasket failure allowing oil to go elsewhere than >>> designed. >>> The cam tower oil delivery pipe is loose or fell off. I'm assuming that >>> this is a non turbo, so no oil squirts that may have failed? >>> YMMV >>> >>> Fred Moir >>> Lynn MA >>> Diesel preferred. >>> >>> >>> >>>> ________________________________ >>>> From: Kaleb C. Striplin <ka...@striplin.net> >>>> To: Mercedes Discussion List <mercedes@okiebenz.com> >>>> Sent: Sunday, April 6, 2014 1:16 PM >>>> Subject: Re: [MBZ] 76 300D low oil pressure update >>>> >>>> >>>> >>>> I will still pull the valve cover and see what is going on >>>> there. Otherwise, this thing seems about like a brand new motor, no >>>> blowby, oil stays clean even after running it a bit. I am perplexed. > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > All posts are the result of individual contributors and as such, those > individuals are responsible for the content of the post. The list owner has > no control over the content of the messages of each contributor. _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com All posts are the result of individual contributors and as such, those individuals are responsible for the content of the post. The list owner has no control over the content of the messages of each contributor.
