Motor On!It overheated while I was running distilled water through the system in attempt to flush it. You had the Head checked but what about the top of the block and the cylinder sleeves? Then with luck that would drive the ability to find the cause of coolant in the oil. Does anyone have an idea of what to check next? Maybe we both got bad oil coolers? do we have cracked engine blocks? Seems like cracked R53 engine blocks are rare.įirst and foremost I would find out way it overheated, while idling. Both cars got new head gaskets and oil coolers. I have a friend at an import shop that has a customers R53 with the exact same issue and we are both baffled by this. now I'm still getting coolant in the oil. So I removed the head and had a machine shop inspect it. I assumed it was the head gasket because those have been known to fail after overheating. after that I began getting coolant in the oil. I then decided to flush the coolant (because of the gunk) and while doing so I walked away and the car overheated briefly while idling. I ended up changing the oil cooler because I found peanut butter looking gunk in it while changing the rings. It started when I was chasing an oil leak. My Mini R53 is getting coolant in the oil. I've already spent lots of money and man hours trying to fix this. I'm hoping someone can help me figure this out. The steam that is burnt off can also cause lead to damage in the catalytic convertor as it exits through the exhaust system too.I changed the head gasket and oil cooler. The same failure will also allow coolant to get sucked into the cylinder, where it is then burnt off as steam, or white smoke out the tailpipe, and a sweet smell. This, in turn, can result in a damaged radiator, hoses, and other cooling system components. This leak also results in a drop in coolant level, causing overheating. Often times this presents itself as a radiator hose blowing off its fitting. If the head gasket fails between the cylinder and a water passage it will allow exhaust gases to enter the cooling system, resulting a pressurized cooling system and overheating. Keep an eye on the engine oil level and don’t let it run low. Depending on how the engine is designed, this sort of leak may result in less oil pressure getting to an overhead camshaft. While not as immediately dangerous as other types of head gasket failure it will still require repair as it will only get worse over time. This one is fairly easy to spot, and if the head gasket fails between an oil gallery and the outside of the engine you will be able to see the oil leaking down the engine. You will also experience rough running, and a loss of power. This allows some of the compression to escape out of the engine, causing a ticking noise at idle that can sound like an exhaust leak. This type of failure is not as common as the others, but some engines are prone to the head gasket leaking between the cylinder and the outside of the engine. This sort of head gasket leak typically results in rough running, misfires, and a loss of power. This causes a loss of compression, and sometimes allows exhaust gasses back into the intake, depending on cam timing. If the gasket fails across the fire rings it can allow the compression to leak from one cylinder to the next. This will result in contaminated oil (the white milky sludge or "milk shake" associated with a blown head gasket) and a compromise the cooling system. If the head gasket fails between an oil gallery and a water passage it will allow the engine oil and coolant to mix. This will eventually cause a drop in engine oil levels, and will also cause blue smoke from the exhaust from burning oil. The same failure will also allow the piston to suck oil into the cylinder, where it will be burned off as part of the combustion process. ![]() Hot compression gasses will compromise the lubrication of vital bearings, such as the crankshaft main bearings. If the head gasket fails between the cylinder and an oil gallery,compression will enter the oil system and pressurize the crankcase. ![]() When the coolant level drops too low the engine will overheat. If a head gasket fails between a water passage and the outside of the engine, the cooling system will eventually run low on coolant. This one’s not as easy to spot as some of the others, especially if the leaking coolant dribbles to the ground while driving, or evaporates, and leaves little trace of where it is leaking. ![]() When a gasket does fail, it can do so in a number of different ways, and each failure will result in different symptoms: 1) Coolant to outside leak A cylinder head gasket is one of the most stressed gaskets in an engine, because it has to simultaneously seal oil, coolant, and engine compression away from each other and the outside.
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