Record leakage percentage for the cylinder. This video is about how to use a harbor freight leak down tester on a small engine.
How To Make Your Own Faa Spec Leakdown Tester Evolutionm
How to use a leak down tester. Today its common practice to use a cylinder leakdown gauge to evaluate how well each cylinder performs in retaining pressure. Use the leak down test to know if you should be changing head gaskets valves piston rings or looking for a crack. To use the leakdown tester youll need an air compressor with an air tank. Step 1. How to use a leak down tester tool cylinder head leakage detector duration. A threaded coupling is screwed into a spark plug hole.
A cylinder leak down test requires the removal of all the spark plugs. When the leak down test tool is attached to the cylinder the next task is to attach the tool itself to the air compressor. Place the car into gear if you can but also engage the parking brake so it wont roll. The crankshaft is then turned so that each piston is at top dead centre. How to perform a leak down test. Remove the spark plugs and rotate the engine to put the cylinder to be tested at tdc.
Figure out which spark plug adapter works best and connect the gauge into the hole. If the compression is low in a cylinder its time to find out why. I wasnt able to get the tester to work correctly using the instructions provided with the tester so i made one. Chocks behind the wheels can also be useful. Plug the air line into the tester then use the yellow adjustment knob to change the airflow till the needle on the left gauge is on 100. Compressed air 80 to 90 psi is then fed into the cylinder.
Put the vehicle in gear and. Online auto parts 6637 views. The process is simple enough pump a measured amount of air pressure. Remove the screwdriver and hook the leak down test tool into the spark plug hole.
Gallery of How To Use A Leak Down Tester
