1. Coolant loss and internal coolant leak Coolant loss is one of the most common symptoms of a failing EGR cooler. This can be caused by a leak in the EGR cooler itself or in the hoses that connect it to the engine. In many cases, the coolant loss is internal, which means that you may not see any visible signs of coolant leakage. A crack in the EGR cooler itself can cause an internal coolant leak. If there is a crack in the EGR cooler, it can also cause exhaust gases to mix with the coolant, causing the coolant reservoir tank to pressurize. This can lead to the coolant spilling out of the overflow. 2. Overheating If the EGR cooler is not functioning properly, it can cause the engine to run hot. This can lead to overheating and potential engine damage. 3. Decreased fuel economy A faulty EGR cooler can cause the engine to run less efficiently, resulting in decreased fuel economy. 4. Increased exhaust smoke A failing EGR cooler can cause an increase in exhaust smoke, particularly white or blue smoke. 5. Check engine light The engine's computer may detect a problem with the EGR cooler and trigger the check engine light. Diagnostic trouble codes (DTCs) related to the EGR system, such as EGR low flow, EGR efficiency, and EGR differential pressure, may be stored in the engine's computer. 6. Decreased performance If the EGR cooler is not functioning properly, it can lead to decreased engine performance and power. 7. 5mph derate If the EGR cooler becomes plugged with coolant or soot (from age or possibly premature failure), the EGR flow may become so low that the truck cannot complete a regeneration. This can raise the soot level and cause the truck to go into a 5mph derate. It is important to address a failing EGR cooler as soon as possible to avoid this issue.
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Signs, Troubleshooting & Consequences of Failing Shock Absorbers on your Semi Truck & Trailer
Signs of Failing Shock Absorbers Uneven tire wear: If the shock absorbers are not functioning properly, the tires may wear unevenly. Increased bounce: If the shock absorbers are worn out, the truck or trailer may exhibit increased bounce or oscillation when driving over rough roads, bumps or when braking suddenly. Difficulty steering: Worn shock absorbers can make it more difficult to steer the vehicle, especially at higher speeds. Poor handling: Failed shock absorbers can cause the truck or trailer to handle poorly, making it difficult to control the vehicle. Excessive body roll: If the shock absorbers are not functioning properly, the vehicle may exhibit excessive body roll when turning or cornering. Troubleshooting Failing Shock Absorbers Inspect the shock absorbers for visible signs of damage, such as leaks or cracks. Check for worn out bushings on the shock absorber mounting locations. Test the shocks for proper operation by pressing down on the corners of the vehicle and observing how quickly it returns to its original position. Have a mechanic perform a road test to see how the vehicle handles and to identify any problems with the shock absorbers. Consequences of Ignoring Failing Shock Absorbers Reduced handling and stability: Worn shock absorbers can significantly impact the handling and stability of the vehicle, making it more difficult to control and increasing the risk of accidents. Increased tire wear: Failing shock absorbers can cause the tires to wear unevenly or prematurely, leading to the need for costly tire replacements. Damage to other components: Worn shock absorbers can put additional strain on other suspension components, potentially leading to their failure and requiring additional repairs such as air springs, bump stops, leaf spring bushings, leaf springs etc.. Decreased ride comfort: Failing shock absorbers can make the ride of the vehicle much less comfortable, especially on rough roads or when driving over bumps.
Semi Truck Clutch Failure FAQs
If you drive a semi truck, you know that the clutch is an important component of the vehicle. It is responsible for engaging and disengaging the engine from the transmission, allowing the driver to change gears and control the movement of the truck. When the clutch goes out, it can be a major problem that may leave the truck unable to move after it comes to a full stop. One of the first things you will notice if the clutch goes out on your semi truck is that it becomes difficult or impossible to change gears. This is because the clutch is responsible for connecting and disconnecting the engine from the transmission, and without it, the gears will not be able to engage. However, the truck can be driven normally until you come to a stop, considering you don't use the clutch while the truck is already moving usually.
How To Replace an Air Dryer Filter on My Semi Truck?
Gather the necessary tools and supplies: You will need a new air dryer filter, a pair of gloves, and a few basic tools such as a wrench or socket set and a special large filter wrench. Drain the air from the system: It is very important to completely drain all of the air from the truck's system, preferably using the drain valves on the air tank reservoirs and monitoring the air pressure gauges on the dash. Use caution when removing the filter, as the system is normally pressurized and may still be pressurized even after draining. Locate the air dryer: The air dryer is typically located near the front of the vehicle, often on the driver's side. It may be mounted on the frame or on the cab, or it can also be located on the driver's side behind the steer axle near the transmission. Remove the old filter: Depending on the specific make and model of your semi truck, the filter may be held in place by a clamp, bolts, or some other type of fastener. Use the appropriate tool, such as a large filter wrench, to remove the old filter. Inspect the filter and air dryer base: Before installing the new filter, inspect the old filter for oil residue. Also inspect the air dryer base for oil residue, air dryer filter desiccant particles (a sandy or beady substance), or clogged ports. If necessary, the air dryer base may need further repair or cleaning. Install the new filter: Once the old filter has been removed and the air dryer base has been inspected, insert the new filter into place and secure it using the same fasteners that were used to hold the old filter in place. Test the system: Once the new filter has been installed, test the air dryer and the air brake system to make sure everything is working properly.
