Chevrolet S10 Blazer Parts And Chevrolet S10 Blazer Accessories
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The Chevrolet S10 Blazer is equipped with either an inline 4 or V6 engine with an output that\'s competitive with other SUVs in its class, but it tends to lose power over time. And in many cases, this is caused by lack of pressure in one or more of the engine\'s cylinders.
To determine whether loss of pressure is the cause of engine trouble in your Chevy Blazer or not, you will need to have the engine undergo a compression test. These tests are among the common services provided in auto repair shops, although the actual test is easy enough for a car owner with considerable skill in auto repair to conduct at home.
A compression test checks the condition of the engine valves, valve seats, and piston rings. These components in particular are among the first to wear out, leading to loss of pressure in the cylinder and the ensuing power loss. And because loss of pressure is one of the first and most reliable signs of engine valve and piston wear, compression tests are an effective way of diagnosing any problem with these engine components. In addition, compression tests are also essential for high-performance engines, as they can be used to help improve the engine\'s horsepower output.
Although it sounds complicated, the entire compression test procedure revolves around attaching a compression gauge onto the engine and looking at the indicator. The gauge can usually be purchased in auto parts retailers and hardware stores, although they are easier to find online at often much lower prices. Also, since several parts of the engine will need to be disconnected during the testing process, having a wrench and socket set on hand is advised.
To start the test, switch on the ignition and let the engine idle until it reaches its running temperature. Once it is warm enough, switch the engine off. However, if the Blazer\'s engine is unable to start, skip this part and continue with the rest of the test.
With the engine off, carefully remove the fuel pump fuse and start the car again until it stalls from lack of gasoline. Doing so will prevent fuel from spurting out the spark plug holes later on. Next, depending on the model year of your Blazer, you will need to pull out the electrical connector from the center of the distributor cap or at the ignition coil module. Take out the spark plugs and disconnect the wires for each spark plug. Make sure to handle the plugs with care and label the boots of the spark plugs\' connectors for easy installation later on.
Insert the compression gauge by hand onto the first cylinder\'s spark plug hole, which is the one nearest to the drive belt. Have someone crank the engine continuously; this should cause the needle on the pressure gauge to rise. Once the needle reaches its maximum reading, stop the engine. As a rule of thumb, the engine should have a reading of at least 100 psi. If the needle goes below this mark, the engine has very little compression potentially caused by valve or piston issues.