No. 56 Eddy. No. 56 intake leak tester, 4 bolt

If you are wrenching on vintage iron, the Fast Eddy No. 56 intake leak tester is a vital addition to your toolbox. This USA-made 4-bolt test plate is specifically designed for Harley-Davidson models running Linkert 4-bolt manifolds. It includes an air fitting and is used to verify that your intake system is completely sealed. By bolting the plate to the manifold and using a vacuum pump, you can check if the system holds a steady vacuum. If it fails to hold 10 inHG for 10 seconds, you can apply positive pressure to find the exact source of the leak. It is an indispensable tool for getting those classic engines idling perfectly and running as they should without the frustration of mystery air leaks.