The problem could be as simple as a low oil level or a signal of serious engine problems. A reading less than 20 PSI or under the normal range on the gauge is cause for immediate attention. Discussion in 'Softail Models' started by xxspark, Apr 26, 2010. 5 psi is dangerously low by me if it doesn't improve with a filter/oil change. Also making a low pitch squeal right from cold that increases with revs. But as the temperature starts to rise the pressure will slowly bleed off. Pressure is caused by the resistance of the oil to flow (viscosity); under the pumping action of the oil pump. What Causes Low Or High Pressure. So, with wide oil galleries and low viscosity oil, flow would be rapid and pressure low. Repair manual says: '...if the bearings are faulty...a marked fall of pressure will be noted when the engine is hot." However, ideally the oil pressure should never go too low. Replaced oil pick up tube "O" ring. I just rebuilt my first fe motor ('71 360 f100). low oil pressure. Rick Hesseltine. I have an 89' 302 EFI. Common Symptoms Of A Low Oil Pressure; Warning Light, The simplest indicator of a low oil level is when the oil warning light activates. The oil pressure has always been reading low. You should take this warning seriously and add more oil to your vehicle before the symptoms get … Post Aug 27, 2001 #1 2001-08-27T01:59. Engine Bearing Step 7 - If the engine has no oil pressure, suspect the oil pump drive, some manufactures use a belt to drive the pump which are prone to failure. gonna try to do this without dropping oil pan. I mean you could probably keep running it at lower pressures but doing so indicates you have wide bearing clearances and I don't see the point of running stuff till it totally dies. That flickering oil light and low oil pressure message usually shows up during the summer months based on my own experience and my experience here on the board. Oil leaks most frequently occur at the valve cover, oil pan or timing cover gaskets, and the front as well as rear crankshaft seals. Crankcase Lubricant Level Oil level can be too low for oil pump suction bell pickup. 360 low oil pressure at idle, lifter tap. The symptoms of a low oil pressure to the injectors will be low power especially when hot, high fuel and oil consumption and blue exhaust smoke especially on start up. If ignored, further (ab)use of your car could seriously harm your vehicle, and you would eventually be picking up your engine parts scattered along the highway, hoping and praying that your AAA subscription hasn’t expired! 2002 Chevy Silverado 5.3 low oil pressure. at start up, so probably not the oil pump (repalced it anyway), new filter, I heard from a chevy mechanic friend that if a rocker arm swings off that the lifter will push up enough to bypass oil … The low oil pressure causes are due to several problems such as inaccurate gauge, oil pressure in excess, oil inlet tube leak or restriction, broken relief spring of oil pressure, or camshaft clearance. Service switch. This is after I put in the 20w50 oil. I'm having the same problem as stouttrout - Low oil pressure on a small block 350. Or time for a good trading off. Oil pressure dropping when hot usually points to two sources: 1. Replaced oil pressure switch w/ o.E. It reads 30 PSI at startup and as the engine warms will … Which bearings? If an engine was running lower than 15 or 20 psi hot at idle I'd be rebuilding it. V. My Low Oil Pressure Warning Light Comes On and Off. Check oil level and add if necessary. It only has 10 lbs of oil pressure at idle and peeks at 40lbs at about 2g's. Hey guys the 350 in my car has very very low oil pressure at hot idle. Rick Hesseltine. I checked it with a mechanical gauge, and it shows there is almost 0 psi at the hot idle. Add Oil To The Engine. A low oil pressure message/light is becoming a common complaint on 2007-2016 GM vehicles equipped with a V8 engine and active fuel management (AFM), which is sometimes referred to as displacement on demand (DOD). It is all factory with the exception of headers and exhaust. Knocking Sounds, The reason is because there is less oil to lubricate the engine parts. That occurs because hot oil thins out badly lowering overall oil pressure due it more easily finding wide leak points at the main bearings, rod bearings, casehalf seal and lifters. When these bearings wear, they can allow more oil to escape causing low oil pressure, this is a sign the engine has worn out and replacement or rebuilding is needed. low oil pressure when warm. The problem developed suddenly, so not (probably) loose bottom end tolerances, good press. Also dont know how many miles are on the jeep but as the engine wears it gets more clearance in the rod an main bearings.Also the oil pump will wear and will show lower oil pressure when the oil is hot. When my idle is set at about 1000, there is a difference in hot oil pressure at idle..... Click to expand... Everything you said is True but how is it … Re: Oil Pressure Low When Cold - Normal When Hot Dec 02 2018, 1:52am thanks i appreciate it. These symptoms often occur with no indication of a low oil pressure condition such as engine related noises. Here are some ways how to fix low oil pressure problem. In neutral it comes up to like 4 or 5psi, then when cruising it looks ok. Just slightly under 20psi. 13 4. On a Diesel engine there are a whole number of things that have been mentioned by others which incidently are equaly applicable to Petrol engines. This repair involved checking oil pressures on the engine side and the high pressure side and helped us determine what was causing the problem. The first 35 or so were flawless, but then I noticed the low oil pressure light flickered on as I coasted to a red light after burning up the road at an absolutely blistering 47 mph. Replaced oil pump w/ o.E. Old engine. Pick up screen clean. Oil leaks are a common cause of low engine oil pressure. How to Check Oil Pressure on Chevy Silverado. Bring the level up the oil to the FULL mark on the dipstick by adding oil to the engine if the oil level is low. For the light to come on, oil pressure has to drop below 5 or 10 psi at idle, depending on vehicle model. NO internal engine noise ( bearings or lifters ) at idle. When I start the truck cold the oil pressure is at 40psi and will go higher whenever I touch the accelerator. How to fix low oil level can be resolved with simple solutions Lubricant level oil level can be resolved simple... Squeal right from cold that increases with revs pick up tube `` O '' ring a 3.8 ( 3800 2. So, with wide oil galleries and low viscosity oil, this Burning could... Involved checking oil pressures on the engine side and helped us determine what causing. Rapid and pressure low hot usually points to two sources: 1 after i put in system. This repair involved checking oil pressures on the gauge is cause for immediate.... 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