Tried to do a compression test the other day.
Warmed up the car to normal operating temperatureRemoved all spark plugsReleased fuel pressure and removed fuel pump fuse
Something I forgot?
I did #1 cylinder first, and when I crank the engine, the needle on the gauge just fluctuates, I thought it was supposed to give a nominal reading and then you release the pressure? I crank the engine and it hits 150-180psi and when I stop cranking, it goes back to zero. I tried #2 cylinder and it did the same thing. Is it possible that when I stop cranking, there is a valve open? I put a little bit of oil down the #1 cylinder and from what I could make out, the reading was 180-210?
So obviously I didnt know what the hell I was doing, so I didnt check the other cylinders.
Oh yeah, when I removed the compression tester hose, there was a spark plug washer/gasket threaded onto it, which came from the engine, and since I just replaced my spark plugs and checked that it didnt come from one of the new ones, it must have been left there or fell down there so I removed it thinking maybe that was causing the leak and still no dice.
