Hi Mark, Sometimes when you direct the hose at the spot, it dosen't act the same as when it is raining. The only way that you might find it is by sticking the hose out a second stor window and aiming it down on the car so it acts like rain. Just remember that the leak might not be from the spot you see in the trunk but could actually leak in on the right side and run along the metal until it drips off at the other side of the car. Have patience, you will find it eventually or suffocate yourself by being locked in the trunk for awhile. good luck Allan R 62 conv seeking hood ornament and top clamp