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Verification on your question: Do head gaskets make cars lose pressure....hmmmmm, I think what your asking is.... Does a head gasket make an engine lose compression. - Correct?

The simple answer is yes, it does, but it is by design. The amount the head gasket lowers the compression (or pressure) is built into the overall design of the engine. For instance, if you were to assemble the head to the block, without a gasket, you would raise the compression (pressure) slightly and potentially cause damage to the engine. This would most likely become apparent when you burn out a valve or burn a hole in the top of a piston.

In general terms: - The greater the compression ratio, the bigger the explosion in the bore and the more heat that is produced.

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Q: Does a head gasket make an engine lose compression?
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Related questions

What will cause 4 cylinders in the same row of a v8 engine to lose compression?

Blown head gasket is one cause.


What happens if head gasket is going on a car?

You start to lose compression and coolant is in your oil


Why would a engine lose power and over heat?

Head gasket


What causes a cylinder to lose compression in a 4.9 6 cyl?

Burnt Valve, worn piston rings, blown head gasket, or cracked head.


Can you drive with blown head gasket?

Not very far. If it's only the head gasket your engine should still run but driving it is a very bad idea. with a blown head gasket the coolant channels wont be sealed and you'll lose it all. without coolant the engine would overheat in a matter of minutes.


Why would your Chevy Cavalier 2.2 lose compression?

bent valve, burnt valve, stuck valve, broken piston ring, cracked piston, cracked head, blown head gasket.


Why would an Audi a4 1.9 turbo diesel lose power?

Head gasket failure, timing belt slipped a notch, turbo shot, loss of compression.


What causes a car engine to lose water when there is no sing of a leak?

This is usually a head gasket problem, meaning the engine will eventually fail without testing and/or repair.


What could cause my 2002 Ford Focus to lose compression?

Blown head gasket, burnt or bent valve, spark plug loose, busted piston, worn or broken rings,


If98 Malibu and it is overheating If there is a blown head gasket wont it lose power when driving?

Not likely. The engines that were used in the 98 Malibu (the 3.1 L v6 and 2.2L 4cyl) were both known to have head gasket issues. Usually on these engis, the head gaskets break down between the coolant and oil channels. That means that the engine could easily still have full compression on all cylinders, which would cause no difference in power. Have it checked by a professional before you damage the rest of the engine.


If an oil-water mix is flowing out of the dipstick would it be caused by a head gasket or rings?

It would most likely be the head gasket as there is water in the oil. The rings would lose compression. Probably head gasket or cracked head or block. Most likely the head gasket. For sure not the rings. If you have aluminum head and the engine has been overheated, then a cracked head is likely. Also there are some weird engines are out there. IE some of the GM Quad Four engines have a water pump that is driven by the timing chain. If the seal goes bad in that pump, then water will leak directly into the engine. btw, that particular water pump is probably the worst and hardest water pump replacement job known to cars. Good Luck Rick


Whats the difference between a cracked head and a blown head gasket?

The head gasket is the thin piece of gasket material that is between the engine block and the head. The head gasket fills small imperfections in the head and creates an air-tight seal between the two surfaces, note that it is a seal that is capable of enduring tremendous extremes of heat and pressure. Usually, when a head gasket goes bad, it is caused by a warped head. Heads warp when the engine overheats. In an extreme case, when an engine overheats the head and/or engine block can crack. But in any case, all are caused by an overheated engine. To prevent engine overheating, inspect belts and hoses whenever you purchase fuel. Do it when you check the oil... oh yea... you should probably check the oil regularly as well, but that's another subject. If you see cracks in the hoses or the belt, make the appropriate changes as soon as possible. Hoses also become hard and inflexible. They should be replaced when THAT happens as well. It is not at all unreasonable to expect over 200,000 miles from a properly maintained engine. Heads and head gaskets will last that entire time if the vehicle is properly maintained. The cylinder head is a piece that sits on top of the block and forms the upper part of the combustion chamber. It houses valves, sparkplugs, injectors, and part of the cooling system. It is bolted to the top of the engine block, separated by a thin gasket which seals the space between the two. If this head gasket breaks ("blown gasket"), you can lose compression, necessary for engine combustion, or you could possibly have an exhaust or coolant leak, depending where the break is. "Usually," the replacement of a head gasket is not a big or expensive job...unless there are a lot of engine parts that have to be removed to get to it. A cracked head, on the other hand, may have the appearance of a blown head gasket, i.e., loss of compression or exhaust from the cylinders, but repairing a cracked head means removing it and replacing it, along with the valves, sparkplugs, etc., and can be quite a bit more expensive. Hope that helps. A cracked head means the head itself has a crack in it. Usually between the valves. A blown head gasket means that the gasket that sits between the cylinder head & the engine block has a crach in it allowing the oil and water to mix.