we did a tiny diy just to get an experience of compression testing
two types of tests were done
1.dry
2.wet
both results had same results,
it was done it 4 simple steps
1.disconnect injectors and remove them.
2.take out plugs
3.insert guage into each cylinder one by one( make sure its tight,in our case it wasnt tight enough for my car so the test wasnt v accurate
4.crank the car while guage is in a cylinder,do this for each cylinder
the guage