Views: 78 Author: Site Editor Publish Time: 2024-09-03 Origin: Site
The BMW B38 engine is a three-cylinder turbocharged engine with excellent performance and advanced technology. It is widely used in many BMW models, especially the 1 Series, 2 Series, 3 Series and some Mini models.
Although the B38 engine is well received for its efficiency and performance, it also has some common problems. Today, let's talk about the common problems of the BMW B38 engine.
01 Resonance and impact on the car body
When the car starts, obvious resonance and impact can be felt inside the car, and there will be strange noises when shifting gears. This may be due to broken engine mounts, causing oil leakage. This situation is common when the vehicle has traveled 50,000 to 70,000 kilometers. It is recommended to check and replace the engine mounts in time.
02 Coolant Leakage
Owners of B38 engines reported that their driving instruments had water temperature warnings, or coolant leaked from under the chassis. This may be due to a water pump or thermostat failure. This is because they are generally made of bakelite, and as they are used for a long time and are in a high temperature environment, these parts are prone to aging or cracking. If damage is found during inspection, it is recommended to replace the water pump or thermostat in time to avoid affecting the normal operation of the engine.
03 Turbocharger failure
This fault often occurs in the B38 engine. During daily driving, the owner may feel that the car's power has dropped or fuel consumption has increased. This may be because the turbocharger has been working in a high temperature and high pressure environment for a long time, resulting in severe wear or oil seal leakage, thus affecting the engine's supercharging effect.
04 The engine indicator light is on
If the engine fault indicator light is on and may be accompanied by excessive idle speed, abnormal rattling noise or occasional flameout, this may be due to too lean mixture, carbon canister solenoid valve failure or DME module storage fault code, etc. It is recommended to check and replace the carbon canister solenoid valve or related parts according to the fault code prompt.
05 Knocking sound in VANOS area when idling
When the engine is idling, especially when the oil temperature is below 20 degrees, there may be knocking noises in the VANOS area, which may be due to improper onboard computer programming or oil viscosity. It is recommended to upgrade the diagnostic tool and check the computer programming or replace the appropriate oil.
06 Crankshaft pulley damage
During the driving process of the vehicle, there may be abnormal noise, engine power reduction and other faults. This may be due to the long-term use of the shock absorber pad on the crankshaft pulley, which has aged and fallen off, causing the inner ring of the crankshaft pulley to rotate while the outer ring stops rotating. It is recommended to replace the improved pulley in time to ensure the normal operation of the engine.
To learn more about Mercedes-Benz, BMW and Land Rover products
