Questions tagged [compression]

One of the four internal combustion engine strokes necessary for the complete combustion process to occur. The compression stroke compresses an air fuel mixture and prepares for it ignition by spark.

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Help me understand the results of these cylinder compression and leakdown tests

I recently purchased a 2007 Subaru Outback 2.5i, with approx 146000kms on the clock. As its a recent purchase, I'm going through preventative maintenance to ensure its running as good as possible. ...
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possible to replace rings in i4 from the bottom?

I'm checking out a 2007 Nissan Sentra 1.8 inline 4, 170k miles, for a friend. I have never witnessed this vehicle while running so here's what I "know." It takes like 20 minutes of cranking before it ...
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2007 KOW VULCAN 800 LOST COMPRESSION

I have an '07 kow vulcan only 6k miles and recently rebuilt carb., now it is losing compression and is killing me to speed up even in low gear, could the clutch plates be shot even at this low mileage?...
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1991 Chevy Astro - O2 Sensor and Low Compression

I have a 91 Chevy Astro van with 15x,xxx miles. It idles very rough and drives extremely poorly at around 40mph, and, overall, seems to lack a bit of power. A compression test was performed on the ...
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back compression in skoda Rapid

I have skoda Rapid 2012, there seems to be a oil leakage. Recently one mechanic said there is back compression in the engine but another said Skodas have back compression and nothing to worry. I am ...
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MAZDA 3 2006 no compression?

Okay so I am in need of advice, I have a Mazda 3 2006, the timing chain was super stretched out which caused the car to die at a stop light or if the gas was not being pushed the car would die. So I ...