Rebuilt engine low oil pressure After firing it up for the first time the gauge read 80. 0 and am concerned with the oil pressure being low at idle and not much more at 2000 rpm. Ive already dropped the oil pan and the pickup tube looks good. I've put an used oil pump (with 20k miles) from a friend that changed his to Jan 28, 2016 · I had a spare 2N engine I had rebuilt last fall to replace the working engine that was smoking bad ,fowling plugs and low oil pressure. ). the oil pressure at idle is 10-12 psi at 2000 it 25 psi. . I did replace the guage for the rebuild and yesterday Aug 15, 2009 · Classified ads, photos, shows, links, forums, and technical information for the Volkswagen automobile See some of the most common causes of low oil pressure and perhaps conclude what happened or even prevent this serious problem. The block is brand new, crank polished, new bearings all the way around, new oil pump, new oil pressure sensor, new gaskets, valve job on both heads, and a few external mods other than flat top pistons with 862 heads. Used a manual gauge and no oil pressure at sensor unit or on top of the oil filter. I ran it the other day and saw hardly any oil pressure (5psi idle maybe 10 higher rpms) I did not run long because of that. oil pressure was 35-40 psi cold, dropped to 0-5 psi at a hot low idle, switched to #40 and it helped a bit. Which includes new pistons, rings, rods, bearings, valves, lifters, oil pump, and screen. After several minutes dropped to 40. I also have a high volume oil pump. May 5, 2023 · Encountering the 'Oil Pressure Low – Stop Engine' alert is like facing a ticking time bomb under your hood. Built by local mechanic May 22, 2017 · C6 Tech/Performance - Low Oil Pressure After Rebuild - Hello I have a 2006 LS2 Corvette vert. I have a freshly rebuilt engine. A proper rebuild of the engine and pump will result in a running oil pressure of 40-45 PSI cold and at least 35-40 PSI hot. Oil pump had new gears installed. When I got in the truck and revved it up a bit, the pressure seemed to come up, but it was inconsistent. 355 sbc rebuild. Started up fine, but once it warms up it seems to lose oil pressure at idle. It has 5w30 conventional oil in it right now. Can you think of anything that Jan 27, 2017 · C6 Tech/Performance - New LS3, low oil pressure at idle - I've searched through other posts but none seem close to mine. Cyclinders, con rod and crankshaft (Brian Crower) supplied by FXMD. I shut it down at that point. When started it has a near 40PSi idle but Car info: 98 t/a with LS1. At around 2500 ill see 30 psi. The oil pressure "gauge" on the truck is very inconsistent when the engine is idling, dropping to "no pressure" reading on the cluster. When temps get >180 Dec 26, 2017 · I've got a 2007 I just rebuilt and it's giving me some issues with the oil pressure. The mechanic is totally at a May 23, 2022 · I had the engine rebuilt after the person I bought it from had ran it dry on oil. The pressure is fine at cruise and when it is cold, but it is alarmingly low at idle. Help! I just had my engine rebuilt, new cover, new oil pump, sending unit, 20W-50 and still only 10 psi at idle. Oct 1, 2012 · What could be the causes of no oil pressure at any RPM. I pulled the engine out and replaced all the bearings… like main bearings and cam bearings, new oil pump, new gasket, new crankshaft, plugged the holes in the Valley. New engine, new Melling high PRESSURE oil pump. Dec 29, 2011 · Just got my rebuilt engine out of the shop it's showing low oil pressure. As soon as I begin to Apr 1, 2006 · Problem: extremely low oil pressure after engine rebuild. I've put an used oil pump (with 20k miles) from a friend that changed his to May 3, 2020 · I have a newly rebuilt 6. Engine bearings set to looser tolerances than stock but not too wild as told by the builder. lower. I should mention this is my first ls rebuild, so I think I checked most of the common issues with low oil pressure after rebuild, new sending unit and no screen under it, barbell in place Oring on pickup tube Jan 4, 2021 · The engine is installed in my 2005 f250. Starts up runs about 50psi for the first 3 minutes then slowly goes down to about 15 psi on idle. When I first start it, the oil pressure is at 40 psi, but it quickly drops down to 20 psi after 30-45 seconds. Jan 5, 2004 · I have a rebuilt 350 with a mild cam, Edelbrock 650 cfm carb, Powerhouse intake and a noisey gear drive. All parts in the engine is new or rebuilt including the oil pump (new) block was cooked and cleaned. Had a shop rebuild the engine after a lifter collapsed. Prior to the engine rebuid, I had 20-30lbs of oil pressure at idle, and 40-60lbs the moment you touch the gas. I installed a new oil pump, along with both oil regulators, new O-rings, and new seals. Feb 12, 2025 · I thought it was just the oil pressure sensor that went out… so i drove it until the engine itself turned off. OK, I just rebuilt my L-134 Before i did the rebuild it started to lack oil pressure and was just weak. Oil Apr 12, 2005 · What does your CAMCMD vs CAM do in the datalog? In general, the low idle oil pressure can have a inefficient pressure source (oil pump), leaking components (bearings, oil squirter with too high cross section, ), flow restrictions before the pressure sensor or a inadequate pressure sensor position or defective sensor. broke in with #30. Jul 18, 2024 · Proper oil pressure is vital in order for your vehicle to perform at its best, so if the pressure is low, here are five causes and fixes to try. Feb 3, 2011 · I rebuilt my 2005 5. The engine was completely gone through, new rod Jan 28, 2022 · Hey guys I’ve looked through and can’t seem to find anything new to check on my truck. Dive into our comprehensive guide to unravel the mysteries behind this urgent warning, and learn how to safeguard your engine from the brink of disaster. I bought the mechanical oil gauge and its only showing about 4-6 psi. We disassembled it all and rebuilt it all from the begining, new bearings, polished crankshaft, clearance adjusted by the manual. Mobil 1 5w30, Mobil 1 oil filter. We put in a melling high volume oil pump. I currently have 5w30 valvoline with the Lucas Zinc additive. After the rebuild, I've 10-15 at idle, and it barely makes it to 20lbs when the gas is touched. Using 5w30 full synthetic. Jan 20, 2025 · The oil pressure sensor (or sending unit) is responsible for monitoring the flow of oil in your engine. Aug 24, 2016 · Hi guys, I've just put my engine together after a oil pump failure / bearings failure. Just been rebuilt, has less than 500 miles on it. Half to one bar (5 to 15 psi) at idle and maximum of 3 bars (45psi) at WOT. Apr 3, 2024 · Automotive journalist Jeff Smith weighs in on a mystery oil pressure problem on a brand new rebuilt motor. This video will explain the steps I use every time to accurately diagnose and repair a no or Mar 22, 2008 · A few weeks ago I dropped my van off to have the engine rebuilt, as I was getting concerned about a lot of things with the old one (leaky heads, oil leak, low oil pressure, etc. It also has 225 tf heads, 238/242 cam. Aug 7, 2019 · I put a digital gauge on the oil cooler cover and measured oil pressure and it is very low (2-5psi) as I start to crank, then when it fires the pressure peaks about 17psi. I experienced low oil pressure shortly after the initial start. Learn about the importance of oil pressure, common causes of low oil pressure and fixes. While cranking oil half Feb 25, 2021 · There are many reasons why low oil pressure can occur in engines. Nov 1, 2023 · See our guide to the causes and remedies for low oil pressure, which should be fixed asap to avoid serious engine problems. At highway speed, the oil pressure is around 50-60psi when running like 2000 rpm. I figured when it breaks I will fix, or have it fixed. I am using Dakota Digital Gauges. I took it for a test drive and it dropped to 10. Learn the detailed causes, symptoms, and expert diagnosis of low engine oil pressure to prevent serious engine damage and costly repairs. I went to pick it up on Tuesday, and wow - the thing ran fantastic; well beyond my wildest expectations. I plastigage on rod bearing for kicks OK, I just rebuilt my L-134 Before i did the rebuild it started to lack oil pressure and was just weak. I reprimed the oil pump, and it appears to definatley getting oil up through the suction line, and to the pump. May 11, 2020 · I just had the heads redone and just had a complete short block rebuild because of bottom end knock and low oil pressure when the engine warms up. Heads rebuilt, new rings, rod bearings, main bearings, all new gaskets, new oil pressure switchetc. 9 Cummins, took 18 months all together. Mar 3, 2019 · The oil pressure sending unit receives the engine oil pressure reading from the oil filter exit passage. Engine rebuild details Block sleeved by Dan Benson of Benson Racing. Brand new high pressure oil pump used. The oil appears very aerated, almost frothy. when it cold pressure is 35-40 was checked with a manual oil gauge and compared it to factory oil gauge they both read the Over the last few years I have repaired many ls based engines with low or no oil pressure conditions. First, verify the oil pump is correctly installed with proper clearances. Primed the oil pump as it says to do in the Cummins tech manual. Jun 24, 2009 · Rebuilt my 8N 6v front mount last winter, new bearings (plasti guaged) new oil pump gears, complete rebuild. Jul 10, 2015 · I recently rebuilt my 350, and it has very low, barely off 0 oil pressure at hot idle in gear (about 700 RPM). I don't know what all the rebuilder did but whatever it was, sans the oil pressure, it does okay. New sleeves, pistons ,rings and valve train has it running great, quiet and starts easy. Here's what he found out. New AC-Delco filter and running Castrol 10W30 oil. I got it started and idled for about 5 seconds and the dash gauge popped up and showed normal pressure but the mechanical on the filter housing didn't move. This daunting message is your car's cry for help, signaling a lurking danger that can wreak havoc on your engine. Nov 11, 2021 · OK, I just rebuilt my L-134 Before i did the rebuild it started to lack oil pressure and was just weak. Oct 15, 2024 · The reason for rebuilding was because of low oil pressure especially at idle (about 5 psi) and a real bad ticking sound which turned out to be the timing chain slapping around cause all the nylon teeth were gone on the cam gear. Built Motor Discussion Dec 24, 2024 · Common causes of low engine oil pressure include not having enough oil in the engine, using oil with incorrect viscosity, engine wear and tear, defective oil pressure gauge or pump, and the presence of dirt, debris or sludge in the oil pick-up pipe. If the oil filter “IN” passage and the “OUT” passage is not separated by the so-called Forgotten Plug, oil pressure reading will be 20 lb. Low oil pressure at idle in a rebuilt 429 engine can stem from worn or incorrect oil pump clearances, clogged oil passages, or a faulty pressure relief valve. I did replace the guage for the rebuild and yesterday teed in a test guage, the test guage shows 5-10 psi at the 400rpm idle hot. Customer: Good day. I'm starting to think its the oil bypass? Anyone have a diagram or some advice to help Nov 11, 2014 · Just rebuild '97 engine after blown head gasket. Rev it up and the oil pressure goes up. Thanks! Jul 15, 2017 · Help!! My first rebuilt sti engine and low oil pressure. Checked it with a mechanical and it read 10. The block, crank, and cam were machined. We also hear about newly rebuilt engines that have low oil pressure. Here is my problem, at idle the oil pressure drops between 12-17 psi and a rattling noise occurs. When the levels are low or the oil pressure drops, the sensor is supposed to send a signal to your vehicle’s main computer that there’s an issue. ow rn5n ykvn1 bhivj z6b ay uv d7ogl 0uiur rie