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Re: 2 lbs oil pressure at hot idle, acceptable? [Re: Challenger 1] #1196201 03/13/12 02:02 PM 03/13/12 02:02 PM
Joined: Jan 2003 Posts: 4,576 Sarcoxie, MO, USA M MoPar Jamie OP master
MoPar Jamie OP master M Joined: Jan 2003 Posts: 4,576 Sarcoxie, MO, USA	both gauges (stock and aftermarket) drop at idle. it may be three pounds but its below five. Sometimes mild (Not hot) it does clatter a lifter or two but its only one and it goes away. I can also see the oil leaving the clear tube at hot idle When going down the road it does sound like a lifter is down but it has good pressure then. I have no idea how many RPMs this thing is rolling down the road. Its not an overdrive trans (998/999) and it has 3.55 gears and 235/75/15 tires. Looks like I need to find a V8 and overdrive soon. I like the Van as a short wheelbase one, it rides good, and most importantly I installed a wheelchair lift for my Fiancee. - MoPar Jamie 1972 Fury III 4dr 1986 D-150 LWB Royal SE

Re: 2 lbs oil pressure at hot idle, acceptable? [Re: MoPar Jamie] #1196202 03/13/12 02:19 PM 03/13/12 02:19 PM
Joined: Feb 2003 Posts: 21,318 Manitoba, Canada DaytonaTurbo Too Many Posts
DaytonaTurbo Too Many Posts Joined: Feb 2003 Posts: 21,318 Manitoba, Canada	FWIW, the 4.2 in my jeep has very low oil pressure too, not that I actually have an oil pressure gauge hooked up. At a hot idle, one lifter will bleed down and start to clack. At an extended hot idle, two lifters will bleed down. I don't care if it dies, I've got a 5.2 magnum waiting to go in. I've driven it as a daily driver around town this way for the past 8 months. Taken it down the trails, off-roading, trips on the highway, sitting idling in the parking lot, etc. Never give it an oil change, just add because the rear main seal pours oil! Hasn't died yet!

Re: 2 lbs oil pressure at hot idle, acceptable? [Re: DaytonaTurbo] #1196203 03/13/12 04:28 PM 03/13/12 04:28 PM
Joined: Jan 2003 Posts: 9,838 Detroit, Michigan, USA! peelerboy master
peelerboy master Joined: Jan 2003 Posts: 9,838 Detroit, Michigan, USA!	If you don't mind the fact that the engine could theoretically let go at any time, I would just run it til it drops. I had a 383 that would go down to 8 lbs. at idle and I ran it that way for years. The lifters would start bangin', though, but if I revved it a little, the pressure would go back up and the lifters would go quiet.

Re: 2 lbs oil pressure at hot idle, acceptable? [Re: B_Body_Bob] #1196204 03/13/12 05:34 PM 03/13/12 05:34 PM
Joined: Feb 2007 Posts: 5,080 organ M maximum entropy master
maximum entropy master M Joined: Feb 2007 Posts: 5,080 organ	Quote: I had one like that, ran it for about a year in the garage while fixing misc other stuff. you're lucky to be alive. for what is the good life if not doing things thoughtfully?

Re: 2 lbs oil pressure at hot idle, acceptable? [Re: maximum entropy] #1196205 03/13/12 08:58 PM 03/13/12 08:58 PM
Joined: Dec 2006 Posts: 602 N.E.Ohio P pacifica mopar
pacifica mopar P Joined: Dec 2006 Posts: 602 N.E.Ohio	Quote: Quote: I had one like that, ran it for about a year in the garage while fixing misc other stuff. you're lucky to be alive.

Re: 2 lbs oil pressure at hot idle, acceptable? [Re: pacifica] #1196206 03/13/12 10:03 PM 03/13/12 10:03 PM
Joined: Mar 2005 Posts: 1,406 New Jersey, USA Y yella71 pro stock
yella71 pro stock Y Joined: Mar 2005 Posts: 1,406 New Jersey, USA	My last truck had a 400 bb that when hot had about 0 psi on the gauge on the dash. never had lifter tap or rod noise.it was a work/plow truck and it worked hard. ran that way for YEARs. after the truck rotted to death around the engine I scraped the truck and kept the engine. I pulled the pan to check the crank and found a bad main on the crank. I did a set of new bearings and put it in a 67 satilite and it is still running good just low psi at hot idle.just keep running it. If its not knocking just run it . When it starts knocking then worry. 71 challenger convertable, 64 sport fury 383 ci with factory air 99 sebring convertable 89 CTD pup

Re: 2 lbs oil pressure at hot idle, acceptable? [Re: yella71] #1196207 03/14/12 01:45 PM 03/14/12 01:45 PM
Joined: Feb 2004 Posts: 855 ontario canada kingston aspenrt360 super stock
aspenrt360 super stock Joined: Feb 2004 Posts: 855 ontario canada kingston	if it was mine i would pull tha pan and take a look around check you pick up tube and pull a couple of bearing caps to see whats up. i have changed bearings in place before if you can't change out the engine right away you can sort of freshen up the bottom end if the crank is not grooved up and if you pull the pump youy may find it is grooved as well all this stuff will drop the pressure and is easy to replace which could keep it running for a long time yet. good luck 2013 Chrysler 300 touring 1974 Dodge Charger SE. 360-727-8.75-3.23 sure grip 1972 Dodge Dart Swinger 1995 Dodge Ram 1500 4x4

Re: 2 lbs oil pressure at hot idle, acceptable? [Re: aspenrt360] #1196208 03/14/12 03:06 PM 03/14/12 03:06 PM
Joined: Jan 2003 Posts: 2,931 P Paul_Fancsali master
Paul_Fancsali master P Joined: Jan 2003 Posts: 2,931	If its a 318 just run it till it pukes. My 79 318 truck had no oil reading pressure at idle due to clooged pickup tube and I ran it for month's before I fixed it.Two lbs is too low but if it runs kick it in neutral when you stop. Chrysler service rep told me that they would not do anything to engine that had 3 lbs of pressure at idle That it would still run and call them when it had 0.

Re: 2 lbs oil pressure at hot idle, acceptable? [Re: Mike P] #1196209 03/14/12 03:21 PM 03/14/12 03:21 PM
Joined: Jan 2003 Posts: 8,846 poplar bluff mo. T toplescuda I Whine
toplescuda I Whine T Joined: Jan 2003 Posts: 8,846 poplar bluff mo.	Quote: Just a thought (I've seen it before) If it had a timing chain with the plastic gear go away and valve seals got hard and broke up, chances are the oil pump pickup could be plugged. You might get by just pulling the pan and cleaning the pickup screen. i also had a motor do what you decribed it was from the timing gear the stuff was breaking off and would work their way to the pickup screen blocking it off causing no oil pressure shut it off and it would fall back to the pan and be fine but as the motor ran it would compleat the cycle 1970 barracuda convert. 1 of 59 1970 pro street A.A.R. clone (panther pink) 1971 charger 2015 hellcat challenger. Redline red 2014 quad cab 4x4 ram 8 speed hemi

Re: 2 lbs oil pressure at hot idle, acceptable? [Re: toplescuda] #1196210 03/14/12 03:33 PM 03/14/12 03:33 PM
Joined: Feb 2010 Posts: 18,493 Granite Bay CA Kern Dog Striving for excellence
Kern Dog Striving for excellence Joined: Feb 2010 Posts: 18,493 Granite Bay CA	Quote: i also had a motor do what you decribed it was from the timing gear the stuff was breaking off and would work their way to the pickup screen blocking it off causing no oil pressure shut it off and it would fall back to the pan and be fine but as the motor ran it would compleat the cycle W H A T ????

Re: 2 lbs oil pressure at hot idle, acceptable? [Re: Cab_Burge] #1196211 03/14/12 09:37 PM 03/14/12 09:37 PM
Joined: Nov 2003 Posts: 3,106 Ridgeland Wi M mopars_1 master
mopars_1 master M Joined: Nov 2003 Posts: 3,106 Ridgeland Wi	Quote: Try another gauge first before doing anything else At that pressure all of the hydraulic lifters should get noisy after idling a very small amount of time, let us know what you find Ill second that. Had a co-worker test pressure in an IH 1066 hydro and it was almost 0 lbs. wasted a whole day trying to figure it out before trying another gauge.. turned out to be right where it needs to be. other wise Id think your problem could be a weak pump. if you had been running it like that a while, Id guess its time for a rebuild.. 1971 Plymouth Duster 340 auto 1937 Plymouth PT50 1969 Dodge Dart Swinger 340 4 speed 2013 Ram laramie 2500 hemi 2008 Harley FLSTSB springer

Re: 2 lbs oil pressure at hot idle, acceptable? [Re: mopars_1] #1196212 04/01/12 12:23 AM 04/01/12 12:23 AM
Joined: Feb 2012 Posts: 10 Up here in Idaho S smallblockman member
smallblockman member S Joined: Feb 2012 Posts: 10 Up here in Idaho	Put a new filter on it, 4 quarts of 20w50 and a quart of Marvel Mystery oil....and run er for 4K and do it again. Bet that little engine just keeps on running?

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