On the cranking side of the engine, added displacement and higher compression ratios also place a greater load on the starter circuit. Diagnosing problems with either circuit can be challenging. To ...

If the starter solenoid only clicks, yet the test light is fairly bright, the starter assembly requires replacement — the circuit to it is good.

No need to get your nose close. Use a voltmeter or multimeter (your new best friends). Then check the battery voltage—around 12.6V when off, above 13V when running (with engine on). And, while testing ...

There are usually a few clues that will let you know when a starter is about to fail - here's what you need to listen for to avoid an unwelcome surprise.

This video from Mecmesin demonstrates the testing of solenoid using a horizontally mounted MultiTest 2.5-i computer-controlled test system, fitted with a 100N loadcell, and a personal computer.