- Incorrect valve clearance adjustment: If the valve clearance was not adjusted correctly, it could cause the valves to not open and close properly, which can lead to a long crank time. It is important to ensure that the dealership used the correct specifications for your engine when adjusting the valve clearance.
- Oil viscosity: The type of oil used in your engine can also affect the cranking time. If the oil is too thick, it can slow down the cranking process. Be sure to use the oil recommended by your vehicle's manufacturer.
- Battery condition: A weak battery can also cause a long crank time. Check the battery voltage to make sure it is within the recommended range.
- Starter motor: A faulty starter motor can also cause a long crank time. Check the starter motor to make sure it is functioning properly.
If you have already checked all of these things and your car is still experiencing a long crank time, it is best to take it back to the dealership and have them diagnose the problem.