Repeat the procedure for each of the six or eight cylinders, recording each number.4. Compare the compression numbers to manufacturer specifications. If the Chevy Silverado contains a 4.3 L V6 engine, the ideal compression ratio is 9.2:1.
Instructions
1. Turn on the engine in the Chevy Silverado to roasting it up, owing to a compression evaluation performed on a algid engine Testament be inaccurate. The battery should be in great action so you can spin the engine many times.
2. Remove all eight Glimmer plugs from the V8 engine after it is mild and turned off. Models containing a V6 engine acquire lone six Glimmer plugs. Disable the ignition operation to eliminate the opportunity of electrical shock while performing the compression assessment.
3. Subsume the compression tester into one of the Glimmer plug holes and Eccentric person the starter so that compression builds thanks to cylinder. Write down the compression number for comparison later and continue to the next spark plug hole.The Chevy Silverado comes with either a V6 or V8 engine, and it is essential to conduct the vehicle running properly to receive the most outside of these effective engines. A compression test is an manageable habitude to good buy elsewhere what is false inside of the engine without tearing it apart. Worn piston rings, cylinder walls and valves are commonplace problems diagnosed by performing a compression confirmation.
If it contains a V8 engine, the ratio varies by engine size. A 4.8 L engine is 9.5:1, a 5.3 L engine is 9.5:1 and a 6.0 L engine is 9.4:1.
5. Evaluate the difference between the recommended compression ratio and the test results. An ideal reading falls within 15 psi. Compare the numbers with each other very. They should be within 10 psi of each other.
6. Retest any cylinders that show a low reading by adding a tiny amount of motor oil to the cylinder, then running the compression test again. If the resulting number is higher than the first, then the engine has worn cylinder walls or piston rings because cylinder. If the number remains the same, then the engine has worn valves or valve seats.
