My rover 100 overheats immeditaly after driving for about 5 minutes. There is oil in the water tank and it bubbles alot. The heating in the car is always cold. Is this a serious problem or one to fix at home?|||Either a cracked head, or a bad head gasket. If you have the tools and a repair book you could do it at home in about 6-9 hours. If your intimidated by mechanical object, send it to a shop. Stop driving it while its in this state of repair or you could ruin the entire motor!|||I could be the head gasket|||Hopefully you only have a bad headgsket so far! Depending on how long you drove it, and how hot it got, the head could be warped, cracked, or "junk"!
The bubbles are (from) the compression leaking through into the water jacket, - which pushes all the water out! Running engine without much (or any) water in it makes things get mighty hot mighty fast! If there is water left, and it "runs" back down in excessively hot engine, it can crack cast iron heads! If an aluminum head gets excessively hot, it gets warped! Beware NEVER pour cold water down the radiator of a car that has just been boiling, when it hits the engine parts, it can crack head (and sometimes even the block), -- it can also boil almost instantly, and shoot out a gueiser of boiling water on you and bystanders!
Changing a headgasket is not that big a problem, - if you have any mechanical knowledge, but you need to check the head and the block over very carefully for damage, and the head has to be checked for warpage! If it has any "hump"in it, the new headgsket won't be any better then the one you have now! Also if the head got "really hot", you better have the valve guides and the valve seats checked, as they could come apart after you put the engine togehther. If they drop down into the combustion chamber, and the pistons hit these parts, - the engine "ends" right then and there!
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