Because the cylinder head block is made in one whole cast.
The gasket is for between the head and the engine block, where else what need to be change is the rubber seal in each of the water jacket between the head and engine block.
If it a hair line crack, it can be tested by performing a pressure test.How to quick fix a crack cylinder head for a car?Your Mechanic SUCKS. It is standard procedure to have the cylinder head magnafluxed to check for cracks.--Alumaseal will help, if you're in a TIGHT pinch crack an egg in the radiator, it is NOT a permanent fix but it'll keep it plugged for a little while.How to quick fix a crack cylinder head for a car?Let's see, bad luck with ceramic/ glass sealant. OK luck with alumiseal and bars~leak. still never fixed anything totally.How to quick fix a crack cylinder head for a car?go to your local autoparts store and tell them you need a head gasket sealer, (the type you add to your radiator) ignore any wise cracks and give it a try as products of that type have helped me keep cars running for much longer than most people think.How to quick fix a crack cylinder head for a car?As an automotive mech. I would say any additives will only gunk up the works for later. Bset thing to do is replace the head. In the long run all the money you spend on ways to repair it will be wasted cause it will need to be replaced reguardless.
so spend lots of small amounts on fix its or go ahead and pay for a replacement now..How to quick fix a crack cylinder head for a car?You need to get it properly diagnosed. It might not be the head... It could very well be the block. My hubby is a grease monkey and doesn't know of any %26quot;quick fix%26quot; that is surefire. There's something called Stop Leak (or something close to that) but it can end up rusting stuff and blocking up your heater core and radiator. If you just need your car to run for a while and don't need it long term, go ahead and try that.
