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Car Forum / Pontiac / Pontiac Fiero / December 2005Cracked Block
Last year bought an 87 coupe with the Duke & auto. Was putting oil in the water but no water in the oil. The mechanic said the head was cracked & replaced it. Still was getting some oil in the water as seen in the overflow container. He said it was leftover from the radiator, hoses, etc. Well a few weeks ago it was short almost 2 qts. oil after checking full 5 days earlier. Reason I checked was driving in parking lot heard noise like I ran over a branch so for some reason I checked, also found water in the oil this time with milky residue on dipstick & oil filler cap. Mechanic flushed out the system & put in a sealer as he said I probably have a crack in the block. He says the sealer should due the job. A rebuilt Duke he said would be $3200 installed. My engine runs really great getting around 25 mpg city driving. My question is does these sealers really work. I have 2 Fieros, this one & a Formula with auto in great shape where as my 87 is really a knock around but is fun to drive. Any ideas would be appreciated. Forgot to add, it does not overheat & has not since I bought it, before me who knows. Temp gauge shows engine running cool. > Last year bought an 87 coupe with the Duke & auto. Was putting oil in the > water but no water in the oil. The mechanic said the head was cracked & [quoted text clipped - 11 lines] > 87 is really a knock around but is fun to drive. Any ideas would be > appreciated. > Forgot to add, it does not overheat & has not since I bought it, before me > who knows. Temp gauge shows engine running cool. [quoted text clipped - 13 lines] > > 87 is really a knock around but is fun to drive. Any ideas would be > > appreciated. If you've had coolant in the oil for any length of time then the engine bearings are heavily damaged and it's only a matter of time before they fail prematurely. The reason this is the case is because antifreeze, ethylene glycol, is a solvent and it shears the oil film on the bearings, allowing metal to metal contact. The mechanic should have flushed all the water out when he did the cylinder head replacement. You can try the sealer, at this point you don't have much to lose, but if I were you I'd be saving up for a new long block in the near future. JazzMan  Signature********************************************************** Please reply to jsavage"at"airmail.net. Curse those darned bulk e-mailers! ********************************************************** "Rats and roaches live by competition under the laws of supply and demand. It is the privilege of human beings to live under the laws of justice and mercy." - Wendell Berry ********************************************************** Most of the problem was oil leaking in the water, the one day I saw water in the oil I had the car towed in. Any ideas do those sealers really work. >> Forgot to add, it does not overheat & has not since I bought it, before >> me [quoted text clipped - 38 lines] > > JazzMan > Most of the problem was oil leaking in the water, the one day I saw water in > the oil I had the car towed in. Any ideas do those sealers really work. Sometimes they do, sometimes they don't, there's no real rhyme or reason as to when they work and don't. There's also no such thing as a one way crack, so if oil is going one way then water is going the other way. Like I said earlier, you don't really have anything to lose by trying, and unless you like nasty expensive surprises I would start saving for a new long block if I were you. JazzMan Signature********************************************************** Please reply to jsavage"at"airmail.net. Curse those darned bulk e-mailers! ********************************************************** "Rats and roaches live by competition under the laws of supply and demand. It is the privilege of human beings to live under the laws of justice and mercy." - Wendell Berry ********************************************************** Thanks will start saving, they want $3200 for a rebuilt installed, is this a good price. Also for 1 year, the time I have the car it was only putting oil into the water, there was no signs of water in the oil till just recently. In the meantime they replaced a cracked head but there was still the oil in the overflow & if you removed the cap of the radiator & thermostat. >> Most of the problem was oil leaking in the water, the one day I saw water >> in [quoted text clipped - 9 lines] > > JazzMan That's a little on the high side but within range. Are you mechanically inclined? If so you can put a long block in yourself for probably less than fifteen hundred. However, first try the block seal, but before doing that you should take it to someplace to have the cooling system thoroughly flushed. If the original mechanic did a half-assed job then it is in the realm of possibility that the oil is indeed left over from the original failure. JazzMan > Thanks will start saving, they want $3200 for a rebuilt installed, is this a > good price. Also for 1 year, the time I have the car it was only putting oil [quoted text clipped - 15 lines] > > > > JazzMan Signature********************************************************** Please reply to jsavage"at"airmail.net. Curse those darned bulk e-mailers! ********************************************************** "Rats and roaches live by competition under the laws of supply and demand. It is the privilege of human beings to live under the laws of justice and mercy." - Wendell Berry ********************************************************** |
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