What could cause slow cranking and excessive current draw?

Slow cranking and excessive current draw during engine start-up can be attributed to multiple factors, and both of the scenarios mentioned are plausible contributors.

An engine mechanical fault, such as issues with the internal components like a malfunctioning ignition system or a problem with the timing belt, can hinder the engine's ability to rotate freely. This increased resistance requires more effort from the starter motor to turn the engine, resulting in slower cranking speeds and drawing excess current from the electrical system.

Similarly, if the starter motor itself is binding or defective, it may struggle to turn the engine over efficiently. A faulty starter can create increased friction or a short circuit condition within the motor windings, which can lead to an increased amperage draw as it attempts to operate, manifesting as slow cranking.

Since both conditions could lead to the same symptoms of slow cranking and excessive current draw, the correct choice encompasses the full range of possible causes, acknowledging that either scenario on its own is sufficient to create the problem.