Can't solve the problem of rainwater leaking into the air filter?

I believe many drivers have encountered such a situation. Whenever it rains, their trucks will experience reduced power and increased fuel consumption. It's normal on other days, but only on rainy days does this happen. Why is this happening?

There are actually a variety of reasons that can trigger this problem; driving on a road with water creates much more resistance to the tires than when driving on a dry road. However, this is not the biggest factor affecting the power, the most common reasons for triggering a truck's lack of power in the rain are faulty electrical circuits and water in the air filter.

Today we will focus on chatting about how to solve the lack of power caused by water in the air filter.

One of the main reasons for air filter water ingress is the poor sealing of the connection between the back-end air intake duct of the cab and the filter housing. Due to the need to accommodate the up and down movement of the cab, it is not possible to make this area a fully sealed integral structure, and rubber expansion joints can only be used for sealing.

As the rubber expansion joint ages and deforms, water can easily enter the air filter from here. But most of us rarely notice this small detail. If your air filter frequently gets water inside, you can seal this area with a modification, which will most likely solve the frustrating problem of water entering the air filter.