New engine smoking

Normal causes for white smoke in the engine bay During cooler days it is normal to see some white smoke coming from the engine. A properly machined and assembled engine should not smoke , period ! What would you do if went to the Chevy dealer and bought a new car and it smoked. A car engine can smoke for several reasons. This could be caused by valve stem seals, worn rings, a plugged PCV valve, not changing the oil for extended periods, too high of an oil level or transmission fluid being sucked into the intake manifold from a bad vacuum modulator.

If the smoke is coming from under your hoo that probably means you ignored white smoke coming out of the tailpipe, and now your engine is overheating. Or maybe you completely forgot to add coolant at all, and the engine overheated. Not that anyone would ever do that. A common reason is that if you leave the outboard tilted down after running it, there can be oil build up in the cylinders. Which, as the engine sits, it can leak down into the cylinder and then, when you start it up, you will see smoke ! Just trim the engine up to about a Degree angle and let it sit for awhile.

That should resolve the smoking. In a new diesel engine the rings need time to seat properly and develop an air-tight seal. After a short period of break-in hours under loa the blow-by problem should correct itself. Consequently, a proper running diesel engine should produce no visible smoke from the exhaust. If there is smoke coming from the exhaust it could indicate a more serious problem with the engine.

It only smokes after having been idling for a few minutes. Reving or fast idling the engine does not change the volume of smoke. I will unhook the PCV and plug it and see if it makes a difference when I drive it.

I keep crossing my fingers that the smoke will be gone when I drive it. I must admit that, in general, the smoke seems to be slowly getting better. Well, I have about 6miles on my newly rebuilt engine and it is still putting out consistent blue smoke. Thin but noticeable if you look close at idle, and volume increases when RPMs increase.

Reasons for a smoking engine include a clogged air filter, blocked manifol oil leaking on to the exhaust system, leaking head gasket or a cracked cylinder head. Regardless of the reason, it is important to visit a mechanic if a car engine starts to smoke, or permanent damage can happen. Older engines are more prone to developing the hot spots that contribute to this oil smoke, but oftentimes you’ll find that it’s a result of worn piston rings or cylinder bores.

Worn piston rings will allow the pistons to suck oil into the cylinder, where it burns and then shoots past the piston rings. Smoke rarely comes from the engine bay, and if it does, the issue is typically critical already. After you build an engine , you start the thing. You let it idle for at least min before you shut it down.

I always have a big magnet on the oil filter. How about your lawnmower? This is usually caused by oil getting into the combustion chamber. Which can be attributed to oil sneaking past the piston rings, or seeping past the valve stem seals.

Never mind all the technical bla bla bla, its a pretty quick and easy fix. What happens is that the piston rings or the valve guide seals or other components of the engine are worn or broken, causing oil leaking. The oil will flow into the combustion chamber, then it is being burnt together with the fuel, creating blue smoke. On start up there is a lot of blue smoke from the exhaust which does clear a bit as the engine warms up.

New AE pistons, rings, new bearings, CR 9. So I have blue smoke when I am under hard exceleration and have been told it could be my pcv valve.