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Nissan Xterra

Can you fix a bad head gasket with a chemical sealer?

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Wiki User
2005-09-11 04:28:45
2005-09-11 04:28:45

No, far too much pressure and heat is built up in the cylinders. If a head gasket has failed it often means that the head has become warped perhaps from overheating.

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If it is leaking from a bad head gasket, it is because of a bad head gasket. If it is leaking from a bad intake manifold gasket, it is because of a bad intake manifold gasket.

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A head gasket is only one of the many gaskets in the engine. Each has a separate function and failure by any one gasket will result in different type of leakage. A head gasket failure is perhaps the most disruptive.

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Yes , engine coolant can get in an engine cylinder from a bad head gasket , a warped or cracked cylinder head , a bad intake manifold gasket etc. ( P.S. I'm not a mechanic / technician )

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A bad head gasket or a cracked head will do that.

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bad engine seal timing chain cover Valve covers Bad oil filter gasket Bad oil sending unit Head gasket bad engine seal timing chain cover Valve covers Bad oil filter gasket Bad oil sending unit Head gasket

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How do you know the gasket is not bad? f you oil is milky then there is moisture mixed with the oil. This can be a blown head gasket or a warped or cracked head.

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The following is true for ANY head gasket failure. The "best" head gasket sealer would be to remove the head, have it machined and put on a new head gasket. Trust me; head gasket sealer won't do much good other than to lighten your wallet a bit. There are always a few companies out there that will try to sell you something to solve your problem, even though it won't solve your problem. The reasons the gasket sealer will not work are very simple: 1. the pressure inside the combustion chamber is so great that the sealing material is constantly being pushed away from the leak. 2. the temperature change causes expansion and contraction of the leak, so even if the sealing material COULD seal the leak, it would immediately break loose next time the engine heats up. 3. the high temperature of the combustion gasses cause the head gasket to continue to deteriorate and any sealing material that has built up will be immediately destroyed. History of a typical head gasket failure. The head gasket failed when the engine overheated. It may not show up immediately, but that's when the failure began. If an engine is allowed to run when the coolant level is too low, the head will warp slightly. It isn't enough to notice when you look at it, but if the head gasket failed, the head is warped. The head gasket depends on even pressure between the head and the engine block. The pressure contains the high temperature exhaust gasses that are pushing against the head gasket every time the cylinder fires. When the head warps slightly, those exhaust gasses find a pinhole to sneak past. The hot gasses under high pressure then start to erode the gasket material and the head gasket will fail completely any time within a few thousand miles. There really is only one way to repair it... sorry to be the bearer of bad news. BTW, radiator sealer actually may work, but it's generally not considered to be a good "long term" solution.

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A bad head gasket or a cracked head(s).

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no it will not. Bad rings will do it, Valves not seating in the head, Bad head gasket. Burnt piston will do it . These are things to look for.

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Most likely BAD HEAD GASKET or warped head

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A cracked head and/or a bad head gasket.

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You may have a bad head gasket and or a cracked head.

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that is a bad head gasket or blown head gasket the engine needs to be repair

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it could mean quite a few things, but blown head gasket is one.

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no. when a head gasket is bad coolant goes to the exhaust pipe and causes the car to smoke alot all white smoke.

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You may not see anything on the gasket. Usually a head gasket "blows" because of overheating that causes the head to warp. A gasket can be bad but there should be a visable break very often in the ring around the cylinder.

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most likely a blown head gasket, cracked head, or bad intake gasket. with the s series. i would venture to say blown head gasket.

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Yes. -Unless your manual specifically calls for it, you never use anything but the recommended gasket

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It could be either the head gasket or the water pump is sucking a little air. Most likely the head gasket though. There are chemical tests to determine if carbon monoxide is getting into the coolant. If it IS, you have a bad headgasket/warped head.

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bad head gasket , warped or cracked cylinder head


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