How do you get water out of a crank case?
Plain old rubbing alcohol (at least 90%) from the drug store is probably your best bet. It’s one of the few things that both oil and water will combine with. I would flush the engine until it looked clean then run your “cheap” oil for a bit, then change it and see how it looks.
What happens when crankcase pressure is too high?
Improperly gapped rings can permit blow-by and oil contamination. Detonation can occur. Compression can be lost. Gaskets can be bubbled, burned or blown out. And of course, water can penetrate into the oil, or worse, the cylinders and hydrolock the engine. Not nearly as catastrophic but equally as terminal is excessive blow-by.
What happens when the crankcase is entered into the engine?
Once entered into the crankcase, the atmospheric pressure begins to build. This superheats the air and oil – far faster than what the engine was designed to withhold, consequently boiling the oil into a miasma of oil mist and fuel vapor.
Why is there no vacuum in the crankcase?
If you see no vacuum, or find a buildup of pressure in the crankcase; the (PCV) system is plugged or is not pulling enough air through the crankcase; to get rid of the blow-by vapors. If the engine has a leaky oil pan, valve cover, intake manifold gasket, or crankshaft seals; it will not be able to develop much vacuum in the crankcase.
What happens if you leave the crankcase breather on?
These gases then cause a pressure build-up in the crankcase, which if went unattended, can cause serious problems like gasket leaks, the engine burning oil, or even worse damage the engine. To paint a picture, imagine an air compressor pumping air into a sealed container of engine oil all the time.
Where does the power come from in a crankcase?
Although the flow through the scavenging port into the cylinder is charged, when the scavenging port is open, substantial backflow from the cylinder to the crankcase is observed. These findings were obtained from the experimental results with the crank-case-compression, two-stroke engine [ 22–26] shown in Figure 13.8.
What do you need to know about crankcases?
Frame and running gear (Crankcase and crosshead). Typical crankcase condition monitoring and safety devices are: Relief device—To prevent crankcase breakage in the event of explosion (caused by entrance of process gas into the crankcase). Breather vent—To allow removal of entrained air from the lube oil.
How does scavenging flow in a crankcase engine?
An illustration of the scavenging flow in a crankcase-scavenging, two-stroke engine is shown in Figure 13.7. When the exhaust port opens, the high-pressure burned gases blow out to the exhaust pipe.
Where is the injector located in a crankcase?
Heads are totally enclosed by individual covers except for the injector, which is located outside to avoid contamination of the lubricating oil by the fuel oil. To facilitate maintenance access, the crankcase is provided with inspection doors on both sides of the engine and is vented to atmosphere.