Fissure in Altima Monoblock, help !!!

Greetings to the forum, and I will really appreciate your answer. A careless pekeño led me to something mayor. For not throwing water to the radiator my car had a warm. That warm the radiator leaving me a great leak and I had to change it. The problem did not end there because when I turned on the car and walk it a couple of days began to throw white humbo through the escape. The heating damaged the engine joints and leaked antifreeze, I left the mechanic and did all the relevant work for the car to look good. A month passed exactly and one afternoon from one moment to another began to get a lot of white smoke for the escape. I took it to the mechanic in crane, and when I reviewed it, he told me that his composure was not related to my new problem, now the matter told me that it is a fissure in the monoblock caused by the warm -up he previously had. He tells me that he will apply "Metalseal" and that he is very confident that this liquid will seal the fissure that the engine has. The truth is that I don't even think, I ask you to attend me recommending a "solution" as economical as possible to be able to roll my car and thus have the opportunity to sell it. I begin to think that my mechanic did not do the first job well and that is causing big problems right now. What do you think ?? THANK YOU!!!

Hi Kankun, if the fissure does not affect any lubrication vein I advise you to make it weld in cold, with the techniques that are today perfect, it is logical, it must first place and be sure of the fissure place, tell us how you are doing, greetings.

Hello, with respect to the theme of the monoblok it is a very delicate matter since if you make you seal the cold monoblok, it may be the case that the seal obstructs some cooling or grease duct the definitive breakage of the engine, on the other hand there is the matter of knowing where exactly the fissure is, this is complicated to determine, if the mechanic gave the fissure to the fissure in the exact point. This option is compared to others is the most economical.
A slightly more effective option is to make a cold welding of the fissure, it is a more complex process than the seal but in the long term more effective and reliable the problem as in the previous case is to find the fissure, anyway if you decide to perform the sealing or the welding you should know that your engine will no longer be the same as before the mishap may endure less in its useful as expected than expected. The most effective solution unemployed at the same time is the most expensive is the replacement of the engine. I greet and tell me how it has gone.

Actually MA458A has rason, the solution is the change of the monoblock not of the entire engine, but you can prompt with liquid glass or other type of block sealant and try to see what happens, I did it with a vehicle and this circle for two years normally, and then it was sold.

I had forgot to me with respect to the work of the mechanics, they must save and remember that we are human and we commit hermers, but we gia ourselves for the logic if every time that a car reheated to the workshop arrives in the view of doing the butt, we adjust the engines and realize hydraulic tests both in the cylinder head and in the block, it would cost them a lot but much more expensive, and they would not want to repair anything, and they would not want to Causes that the vehicles tuersan the block in the warmth and micro fissures, if you could see them the clients would realize that you are almost impossible to detect, so please take care of that kind of comments, greetings and luck a hug and prove what I mention.