Why the rpm is low in morning in mercury villager 94?

In a 1994 Mercury Villager, low RPMs in the morning can be attributed to several factors, including a cold engine that requires more time to reach optimal operating temperature, leading to less efficient combustion. Additionally, cold temperatures can cause thicker engine oil, increasing resistance and lowering RPMs until the oil warms up. Fuel delivery issues, such as clogged fuel filters or failing fuel pumps, can also contribute to lower RPMs during initial startup. Regular maintenance can help mitigate these issues.