: Disconnect the ignition system (coil or distributor) and the fuel injection system (or fuel pump fuse) to prevent the engine from starting or spraying fuel during the test.

: Evaluates the contact point gap configuration inside mechanical distributor setups.

A rotary switch that allows you to select the desired function and range. A hold button that freezes the display for easy reading. Digital Battery Load Tester - OTC Tools

The is an automotive engine compression tester kit designed to diagnose internal engine health by measuring the pressure generated within a cylinder during its compression stroke. It is widely used to identify issues like worn piston rings, leaking valves, or a blown head gasket. Kit Components The standard kit typically includes the following:

: The tester detected a shorted or dead cell. Replace the battery. Alternator and Crank Testing

Innova Electronics customer support may email you a PDF if you request it (provide your model number).

Ensure the A/C, radio, headlights, and heater are completely off.

Measures engine speed, often using an inductive pickup that clamps around a spark plug wire.

Regularly check the test leads and inductive pickup for cracks or damage to prevent electrical shock.

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