What is the reason for the momentary hesitation during ignition in the LaCrosse?
2 Answers
Below are the reasons and solutions for the momentary hesitation during ignition in the LaCrosse, detailed as follows: Fuel issues: Insufficient fuel leading to inability to draw fuel, or problems with fuel quality and fuel supply lines, or fuel thinning due to high engine temperature, causing ignition hesitation. Solution: Regularly replenish and replace fuel. Oil pump damage: Damage to the oil pump or excessive wear of its components, resulting in reduced or no oil intake and output, leading to low or no oil pressure and causing ignition hesitation. Solution: Regularly inspect and maintain the oil pump.
My Buick LaCrosse has been in use for over five years, and occasional ignition hesitation is a frequent issue, especially on cold winter mornings. The primary causes are usually insufficient battery voltage or aging, as low temperatures slow down the chemical reactions in the battery. The starter is also a critical component; if there's excessive carbon buildup inside or gear wear, it can lead to uneven rotation. Additionally, the spark plugs might have been used for too long without replacement, causing poor ignition, or the fuel pump pressure might be insufficient, leading to delayed fuel supply and resulting in hesitation. From a maintenance perspective, it's recommended to check the battery's lifespan annually and not wait until it's completely dead to address the issue. Related discussions: The LaCrosse's ignition system is temperature-sensitive, with fewer issues in summer but requiring extra caution in cold seasons; regular maintenance can significantly reduce such problems, such as replacing spark plugs every two years and cleaning starter contacts to avoid travel delays and save on repair costs.
