也是听诊器

 

 

 

 

 

 

Engine valve lifter tick is not unique to one specific car brand; it can occur in any car, regardless of the manufacturer, but it is more prevalent in certain models, such as BMW N52 engines, Toyota trucks, and Honda Passports, often due to issues with hydraulic lifters. Common causes include low oil pressure, worn or clogged lifters, and oil with the wrong viscosity, which can prevent the lifters from maintaining proper valve clearance.
 

 

Commonly Affected Car Brands & Engines

• BMW: 

  The N52 engine, found in many BMWs from 2004 to 2015, is particularly known for lifter ticking, which is often linked to faulty hydraulic lifters. 

   
• Toyota: 

  Lifter ticking can be a concern in Toyota trucks, with some drivers reporting significant changes in engine noise that sound like lifter issues. 

   
• Honda: 

  Older models like the 1994 Honda Passport have also been noted for developing lifter ticking and oil pressure issues. 

   

Causes of Lifter Ticking

• Low Oil Pressure: 

  A lack of sufficient oil pressure can cause lifters to not receive enough oil to function correctly, leading to a tick. 

   
• Worn or Clogged Hydraulic Lifters: 

  Over time, hydraulic lifters can wear out or become clogged with varnish, preventing them from expanding to maintain the proper valve clearance. 

   
• Incorrect Oil Viscosity: 

  Using an oil that is too thick or too thin for the engine can hinder proper lubrication and oil flow to the lifters. 

   

Troubleshooting & Solutions

• Check Oil Levels and Quality: Ensure your engine is filled with the correct oil type and weight. 
   
• Consider an Engine Flush: Sometimes, an engine flush can help remove sludge and varnish that might be clogging the lifters. 
   
• Visit a Qualified Mechanic: A professional can diagnose the specific cause, which may involve replacing worn lifters or addressing other valvetrain issues.