When the engine is cold, all the parts are tight. Meaning, the bearings, rods, and all have less gap. The oil is also thick. As the engine warms, the oil also warms making it lighter or more fluid. If the main bearings have too much gap, then with the warmer oil the oil flow will increase which in turn will lower the oil pressure. It would not be abnormal to start out with 50 or 60 lbs then have it reduced to 20 lbs at idle. Although the pressure would increase to around the 50 lbs. mark as the engine rev's up. If the oil pressure goes down to say 10 lbs, even at high rev's, then have the pressure checked with a mechanical gauge to confirm the reading and if so, well, time for a rebuild. Low oil pressure will not reach the outer parts of the engine and will eventually cause a lot of damage.
A bad EGR valve should not cause the engine to not start. There is most likely another problem that is causing the engine to not start.
Yes it can, as long as the engine is running. Be careful when taking the radiator cap off thou, cause its under pressure.
NO. That means the engine is running too hot. Check cooling system.
If the engine isn't running, the battery is low. If the engine is running, the alternator probably has a problem. If you are wearing dark sunglasses, remove them and the lights will get brighter. good luck!
To much oil is worse then not enough. If it's way over full then when the engine is running it will cause the oil to go out of the weakest point and that is the engine gaskets.will Cause oil leaks.
What would cause the engine not to restart when hot Chevy Trailblazer 2007?
Fuel pressure regulator.
can a chevy truck with a 350 engine with a tbi cause detonation and pre- ignition?
Vehicle running hot? and fan trying to cool it down Bad temperature sensor?
It's extremely unlikely. Much more likely is rough running (usually due to engine management fault) causing a lack of oil pressure. Also, keep in mind that an excessively worn engine can cause both low or erratic oil pressure and rough running, but this will usually be accompanied by a knocking noise.
It starts by missing and running rough when pulling a load, and worsens until the engine won't run at all.
Engine running hotter then 220 degrees can cause valvetrain noise. Bad fuel can also cause valve noise / PINGING sound. Ignition timing to high / Advanced to far, can also cause engine noise.