Yes, 5 lbs. is too low and you should look into what is causing it. Could be worn bearings, light oil, missing oil passage plug, bad cam, bad pressure gauge, etc. 5 lbs. of oil pressure is very low ,unless you are at an idle, and the engine idle is low. is 5 lbs. what you have at 30 miles an hour? There is no question that 5 psi is too low for a newly rebuilt engine, now the questions start: Who rebuilt the engine? Was the crank turned? Did a machine shop test the block to see if it needed to be align bored? As the above question hinted, what was the engine RPM when you were getting 5 psi? TYPICALLY (assuming the engine has been assembled properly and the oil pump is functioning, pressure bypass has been assembled properly, main and rod crankshaft journals are "round", rods have been reconditioned and all of the other machine work has been properly completed...) low oil pressure is caused by too much pressurized oil leaking past the main, rod or cam bearings. That is caused by an excessive gap between the bearing and the crankshaft. The bearings ride on a film of pressurized oil and SHOULD never actually touch the crankshaft if everything is working as designed. IF the problem is worn bearings, out of round rod 'big ends', worn oil pump, etc, you can OFTEN raise the oil pressure by changing to a higher viscosity oil. If you have been using 5W15, change to a 10W30, etc. If that puts the oil pressure back to reasonable mark on the gauge, you know it's wear related. haha yeah u should have between 40 and 60 at least
depending on its design, a resonator will produce anywhere from almost no back pressure, to a mild amount.
Mild PHT, or portal hypertension is most easily described as high blood pressure in the portal vein and its branches. PHT is usually the result of cirrhosis of the liver.
During a tensile test of mild steel, the bar is tested until it breaks. It measures how much stress the mild steel can take before it finally breaks under the pressure.
The Four major air pressure zonessubtropical HighsSubpolar LowsPolar HighsEquatorial Low
In Fahrenheit, a person with a mild fever.In Celsius pure distilled water boiling at normal pressure.
Blood pressure, weight measurement, urine test for the mother. The fetus is monitored by ultrasound.
A decrease in blood pressure in the brain, affecting the nerve cells. Its a mild form of syncope.
California, obviously. Always the weather was mild and the top was down on the professor"s automobile. ( a Ford Model A).
water as a coolant
mild arthritis, the aching will usually come and go with pressure changes in your environment (weather changes )
The only sure cure for preeclampsia is to deliver your baby. If delivery is not an option or your case is mild, the doctor will monitor your blood pressure and put you on medications to help lower blood pressure and prevent seizures.
Mild cleanser is a mild cleanser.