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Sudden loss of oil pressure! #292087 04/18/09 06:27 PM 04/18/09 06:27 PM
Joined: Mar 2008 Posts: 126 wi. R Rosco OP member
Rosco OP member R Joined: Mar 2008 Posts: 126 wi.	Is there any reason for sudden loss of oil press?Before I shut the car off I had 45psi on the gauge at 2000rpm.I shut the car off,then restarted 10 min. later and nothing on the gauge.I disconnected the gauge at the block after checking the oil and fired it up,no oil coming out of the sender port.It's a 69 383 that's never been apart that I know of,any ideas?

Re: Sudden loss of oil pressure! [Re: Rosco] #292088 04/18/09 06:35 PM 04/18/09 06:35 PM
Joined: Mar 2003 Posts: 1,806 Newfoundland Canada M Mopar1 top fuel
Mopar1 top fuel M Joined: Mar 2003 Posts: 1,806 Newfoundland Canada	I had the same thing happen with a 400, the oil pump failed 1 mile from my home. It was back in the day, so I just drove it home regardless, changed the pump and all was well. You could try another oil filter first.

Re: Sudden loss of oil pressure! [Re: Mopar1] #292089 04/18/09 06:38 PM 04/18/09 06:38 PM
Joined: Aug 2006 Posts: 2,568 God's Country Maryland GODSCOUNTRY340 master
GODSCOUNTRY340 master Joined: Aug 2006 Posts: 2,568 God's Country Maryland	Replace the pump and while there inspect the hex drive where it goes into the pump. Sometimes these round off. I love the smell of Deer guts in the morning, it smells like... VICTORY!

Re: Sudden loss of oil pressure! [Re: Rosco] #292090 04/18/09 06:41 PM 04/18/09 06:41 PM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	intermediate shaft live every 24 hour block of time like it's your last day on earth

Re: Sudden loss of oil pressure! [Re: RapidRobert] #292091 04/18/09 06:55 PM 04/18/09 06:55 PM
Joined: Jan 2003 Posts: 5,367 Rancho Cordova, California (Sa... hemi71x master
hemi71x master Joined: Jan 2003 Posts: 5,367 Rancho Cordova, California (Sa...	Lifter popped out of it's bore, due to a bent push rod. Pull the valve covers. RF-4C Phantom 69-370 Zweibrucken, Germany

Re: Sudden loss of oil pressure! [Re: hemi71x] #292092 04/18/09 07:12 PM 04/18/09 07:12 PM
Joined: Apr 2009 Posts: 122 MOORESVILLE NC 69four46 member
69four46 member Joined: Apr 2009 Posts: 122 MOORESVILLE NC	Had the lifter thing happen to me too several times I would check that first.

Re: Sudden loss of oil pressure! [Re: 69four46] #292093 04/18/09 08:33 PM 04/18/09 08:33 PM
Joined: Nov 2005 Posts: 589 Fortworth TX M mod5v mopar
mod5v mopar M Joined: Nov 2005 Posts: 589 Fortworth TX	FRAM filter collapsed. Happened to me will never use another.

Re: Sudden loss of oil pressure! [Re: 69four46] #292094 04/18/09 09:12 PM 04/18/09 09:12 PM
Joined: Dec 2003 Posts: 5,314 Carstairs, Alberta, Canada dave571 master
dave571 master Joined: Dec 2003 Posts: 5,314 Carstairs, Alberta, Canada	Quote: Had the lifter thing happen to me too several times I would check that first. Yup Free to check. Better than throwing parts at it.

Re: Sudden loss of oil pressure! [Re: dave571] #292095 04/18/09 09:43 PM 04/18/09 09:43 PM
A Anonymous Unregistered
Anonymous Unregistered A	!!!!!Lifter!!!!?!?!??! Are you telling me you shut the engine off NOT REALIZING that it was clanking and whanging (maybe) but missing badly on AT LEAST one cylinder???? I doubt this is a lifter. I'd check the filter/ oil pump/ drive. Was the engine very hot? What were you doing beforehand?

Re: Sudden loss of oil pressure! #292096 04/18/09 09:59 PM 04/18/09 09:59 PM
Joined: Mar 2008 Posts: 126 wi. R Rosco OP member
Rosco OP member R Joined: Mar 2008 Posts: 126 wi.	Just driving into town,about 65mph @2400rpm.Temp was normal.The engine sounds fine,no unusual noise.

Re: Sudden loss of oil pressure! [Re: Rosco] #292097 04/18/09 10:06 PM 04/18/09 10:06 PM
A Anonymous Unregistered
Anonymous Unregistered A	So what did you do?

Re: Sudden loss of oil pressure! #292098 04/18/09 10:17 PM 04/18/09 10:17 PM
Joined: Mar 2008 Posts: 126 wi. R Rosco OP member
Rosco OP member R Joined: Mar 2008 Posts: 126 wi.	Quote: So what did you do? I haven't done anything to it yet,except order a new pump&pan gasket.As good as it idled it's hard believe I bent a pushrod.

Re: Sudden loss of oil pressure! [Re: Rosco] #292099 04/19/09 07:59 AM 04/19/09 07:59 AM
Joined: Mar 2008 Posts: 5,746 Ontario, Canada Dodgem master
Dodgem master Joined: Mar 2008 Posts: 5,746 Ontario, Canada	Well for any of us that have tossed lifters it's almost always on start up. From a bent pushrod but oil usually holds it in when under pressure. What happens is oils drains away and on start up they have a tendency to toss the lifter up and out!! I had a cam that was terrible for bending pushrods back in the early eighties. I used to keep 3 or 4 in the trunk most often when you got gas or other start it up and 0 pressure. I'd pop the intake put lifter back in new push rod and go. later noticed the cam lobes were flaking took it back to mopar and they replaced it (I'm amazed too!!!) and never another bent pushrod.

Re: Sudden loss of oil pressure! #292100 04/19/09 08:27 AM 04/19/09 08:27 AM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	Quote: !!!!!Lifter!!!!?!?!??! Are you telling me you shut the engine off NOT REALIZING that it was clanking and whanging (maybe) but missing badly on AT LEAST one cylinder???? I had a lifter pop out once on me too. Took the kid to the doc, came out to go home, no pressure. No clanking, no whanging, no missing. Only symptom was no oil pressure. Replaced the pump, inspected the drive, etc, till I pulled valve cover and saw the culprit. They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: Sudden loss of oil pressure! [Re: Supercuda] #292101 04/19/09 08:37 AM 04/19/09 08:37 AM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	Rosco we're waiting on you live every 24 hour block of time like it's your last day on earth

Re: Sudden loss of oil pressure! [Re: Supercuda] #292102 04/20/09 08:57 AM 04/20/09 08:57 AM
Joined: Dec 2003 Posts: 5,314 Carstairs, Alberta, Canada dave571 master
dave571 master Joined: Dec 2003 Posts: 5,314 Carstairs, Alberta, Canada	Quote: Quote: !!!!!Lifter!!!!?!?!??! Are you telling me you shut the engine off NOT REALIZING that it was clanking and whanging (maybe) but missing badly on AT LEAST one cylinder???? I had a lifter pop out once on me too. Took the kid to the doc, came out to go home, no pressure. No clanking, no whanging, no missing. Only symptom was no oil pressure. Replaced the pump, inspected the drive, etc, till I pulled valve cover and saw the culprit. yup. It's a common problem, and isn't glaringly obvious as far as noise etc... First hand experience for me here also...

Re: Sudden loss of oil pressure! [Re: dave571] #292103 04/20/09 08:30 PM 04/20/09 08:30 PM
Joined: Apr 2004 Posts: 263 shavertown pa. K kbeeper69 enthusiast
kbeeper69 enthusiast K Joined: Apr 2004 Posts: 263 shavertown pa.	same thing just happened to me,changed,oil pump,pan,fillter,pick-up,found 2 lifters out,3 pushrods out,also,no noises!! so what would cause this? last year only idled the car.

Re: Sudden loss of oil pressure! [Re: kbeeper69] #292104 04/27/09 08:55 PM 04/27/09 08:55 PM
Joined: Mar 2008 Posts: 126 wi. R Rosco OP member
Rosco OP member R Joined: Mar 2008 Posts: 126 wi.	O.K.,I finally got back home to work on it.I pulled the Dist.&drive,put the primer shaft in the pump primed it and the pump works fine.I put everything back together took it for a drive,everything works fine,no noises,60psi press.all the power I had before.I'm using a supertech st8a filter,is that the problem or the oil pressure relief valve in the pump?

Re: Sudden loss of oil pressure! [Re: Rosco] #292105 04/27/09 10:09 PM 04/27/09 10:09 PM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	Quote: or the oil pressure relief valve in the pump? the new pump took care of it? live every 24 hour block of time like it's your last day on earth

Re: Sudden loss of oil pressure! [Re: RapidRobert] #292106 04/28/09 06:44 AM 04/28/09 06:44 AM
Joined: Mar 2008 Posts: 126 wi. R Rosco OP member
Rosco OP member R Joined: Mar 2008 Posts: 126 wi.	I never installed the new oil pump.I'm wondering if I should still pull the valve covers and check pushrods though?

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