The Main Causes Of Low Engine Compression And Their Solution

Causes Of Low Engine Compression


You may not know about low engine compression in detail. However, dealing with your low engine compression vehicle gets very inconvenient. The engine is the main source through which your car gets the energy to move. If there is an issue with any part of the engine, get ready to experience all kinds of troubles while driving. One of the major sign to recognize low compression is when your car misfires every time you start it. Even if you take your vehicle on the road, its performance will be poor. Below detailed are some of the main causes of low engine compression and how you can fix them.

Worn Out Or Broken Pistons

Worn out pistons is one of the most common causes of low compression in the engine. Although pistons are made from sturdy aluminium alloy and are supposed to handle combustion power, overheating can affect their performance. When the pistons are broken or there are holes in it, the gas starts leaking. It results in low compression.

Leaking In The Valves

Each cylinder in the engine has intake and exhaust valves. These valves seal the combustion gas and release it so there will be no smoke emission. If there is the slightest leak in any of these valves, the gas will leak prematurely. You can use a leak tester to identify which valve is leaking. If you spot leakage, you will know why your engine’s performance is down.

Failure Of Gasket

Between the engine and the cylinder head is connected, there is a gasket that can start to leak if breaks. Overheating can leave tiny holes in it causing the gases to leak from there. This is called a blown head gasket. The situation can worsen if the gasket is between two cylinders because it will cause them to leak as well.

Bad Camshaft

A bad camshaft is another reason for a low compression engine. The camshaft has to open and close the intake and exhaust valve when needed. Every valve has a camshaft lobe that determines its performance. If the camshaft is damaged. it will cause the gas to escape on the wrong time leaving the engine empty.

How To Fix Low Compression

Dealing with a low compression engine requires fixing it. When you are successful in diagnosing the reason for low compression, you will find it easier to repair it. If you are now sure of it, you can always count on your engine mechanic for that.

The first thing you need to do is recognize where the damage has taken place. It takes only half an hour to inspect your engine and check for all the above-mentioned causes. Any other factor contributing to further damage should also be counted in.

Check to see if the damaged parts are fixable or replaceable. If the part is not in a condition to be fixed, it is always better to go for a replacement. If you do not replace the damaged parts in time, you may have to do engine rebuilding after some time.

Phoebe Lambert

Phoebe Lambert, an IT graduate of the University of Bolton, is the social media manager at Nayyar's solicitor's company, UK. She uses her shrewd capacity to strategically direct you about social media and media management technicalities and details.

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