How Do I Know if My Semi Truck Has Blowby?

Blowby is a common problem in semi trucks, and can lead to serious engine damage if it is not addressed. Fortunately, it is relatively easy to detect the presence of blowby in your truck. The following are some of the most common signs that your truck may have blowby:

Loss of Power: If your semi truck is experiencing a sudden or gradual loss of power, this could be an indication that there is blowby occurring in the engine. Blowby occurs when excess pressure builds up inside the engine, which can lead to a decrease in performance.

Increased Exhaust Smell: One of the most noticeable signs that your truck has blowby is an increased exhaust smell coming from the tailpipe. This smell is caused by unburned fuel entering the exhaust system due to the increased pressure inside the engine.

Oil Leaks: Another sign of blowby is oil leaks coming from around the engine or exhaust system. This happens because of excessive pressure building up inside the engine, which forces oil out through any weak seals or gaskets present in these areas.

If you suspect that your semi truck has blowby, it is important to take it to a qualified mechanic as soon as possible for diagnosis and repair. Ignoring this issue could cause further damage to your engine, so addressing it promptly can save you time and money in the long run.

In conclusion, there are several signs that indicate that your semi truck may have blowby. Loss of power, increased exhaust smell, and oil leaks are some of the most common symptoms associated with this issue. If you suspect that your truck has blowby, be sure to take it to a qualified mechanic for diagnosis and repair.

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Susan Delgado