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BMW head gasket problem? BMW expert please.?
My 94 525i has done a head gasket what could of caused that? it hasn't run hot since I've owned it nearly 2 years, what is the chance of it having a cracked head or other problems It has only done 135,000 km, have been quoted $1400.00 to $5000.00 to fix it. Is there a design fault with them?
2 Answers
- KmaxLv 51 decade agoFavorite Answer
Cracked head is unlikely. Head gaskets bust because of overheating or pushing the engine too much. There is no design fault with them. They are pretty much the best engines BMW ever built. If something goes with the head, go for a used one, you can get one under $600 and get it replaced for $100-$150.
- 5 years ago
I've changed head gaskets before on BMW's for the same problems your having. You start the engine and it miss fires for a little while and then starts to run smoothly. You may even see a small amount of white smoke(steam) come out of the end of the tailpipe for a little while after starting the engine. Most likely its only on one cylinder that the leak is occurring. They make a kit called Block Check that most auto shops have that will tell you if you have a leaking head gasket. Or the shop can put pressure in the cooling system with the spark plugs out and let it set with the pressure in the cooling system for about 4 hours and then turn over the engine and you they will see what cylinder it is that's leaking. And while they are changing the head gasket have them put in a new water pump. The water pump has a plastic impeller that comes apart.
