What Causes the Vibration in a Four-Cylinder Diesel Engine?

[SawyerLynn]

Four-cylinder diesel engine vibration may be caused by deteriorated engine oil, the quality of replaced engine parts, or poor fuel flow. The specific reasons are as follows: Deteriorated Engine Oil: The engine operates normally due to lubrication and heat dissipation. Severe engine vibration may result from insufficient or deteriorated engine oil. Quality of Replaced Engine Parts: There can be significant differences in quality, leading to varying performance. Newly replaced cylinder liners or piston bearings may be too tight, making engine operation difficult and causing slight vibration. Proper grinding can reduce vibration, while engine stalling at high temperatures may indicate improperly aligned exhaust valves. Poor Fuel Flow: This could be due to clogged injectors or excessive carbon buildup. It is essential to inspect the throttle body for carbon deposits. If carbon buildup is found, clean it first and observe the results. It is also advisable to check the spark plugs and then test the ignition coils. For best results, consult a professional for a thorough inspection.