Note how fast the compression increases and write down the highest reading. Step 1 remove the fuel pump and fuel injection fuses.
Digital Engine Compression Tester
How to use a compression tester. Disconnect the main wire to the coil and spark plug. Regarding how to use a compression tester there are several steps involved. Preparing the testing unit. This will prolong o ring life. With a compression tester a few hand tools and 20 minutes you can try this yourself. The other four are to replace various size spark plugs.
Then the load is placed in the compression tester between the compression platen and the base. Performing the test 1. Use the correct size adapter to screw into the spark plug hole. With the use of a few hand tools a compression tester and about 20 30 minutes you can perform the test at your very own home. The compression tester is the more common of the two and you can usually rent one at your local auto parts stores loan a tool program. Next have a friend crank the engine for five seconds or so while you observe the gauge.
Use a dab of grease or vaseline to lube the threads and o ring on adapter. There are several adapters in a compression test kit. This should include a representative sample of the products whether they are boxes pallets. If youre testing a diesel engine make sure youre. As the tested cylinder comes up on its compression stroke. Most compression testers come in two or more pieces that should be threaded or snapped together from the parts closest to the engine out all only by hand.
Crank the engine at least 4 times to. Hold the throttle all the way open. Hook up compression tester to a cylinder. The leakdown tester is less common and you need to get a. To pick up any of the products used in this video check the. Look down on the engine to figure out which.
Two of them with the tubes in the picture above are to hold directly against the cylinder hole where the spark plug was. You will be able to hear the cranking speed slow. Put the compression test adapter into the engines first cylinder. First of all connect the tester to a cylinder and turn the engine over 6 to 8 compression strokes. Connect the compression gauge to the opposite end of the hose.
Gallery of How To Use A Compression Tester
