emissions test

12 Common Car Problems: Causes, Symptoms, and Solutions

Discover the 12 most common car problems: check engine light, misfires, high fuel use, dead battery. A complete guide with causes, symptoms, and solutions.

5 years ago Read

How to Clean a Catalytic Converter: DIY and Professional Methods

Comprehensive guide to catalytic converter cleaning: effective DIY methods, removal cleaning, preventive maintenance, and when to call a specialist.

6 years ago Read

7 Reasons Your Car Fails the Emissions Test at ITP

Discover the most common causes for a failed emissions test: defective oxygen sensor, worn ignition, rich fuel mixture, and more.

6 years ago Read

Consequences of Driving Without a Fuel Cap: Problems and Solutions

Learn why driving without a fuel cap isn't safe: check engine warnings, fuel contamination, and emissions risks. Quick fixes and replacement tips.

7 years ago Read

EGR valve on diesel engines: operating principles and consequences of disabling

Learn how the EGR valve works on diesel engines, why efficiency may drop by about 3%, and the risks of disabling the system.

7 years ago Read