One of the most difficult tuning problems to overcome is the seemingly ever-present engine vacuum leak. Vacuum is an important component of the internal-combustion process because it controls basic ...

In my 35-plus years of working on cars, I have encountered nearly every frustrating troubleshooting problem in the book. Part of the issue stems from my affinity for old Jeeps and classic cars, which ...

Add Yahoo as a preferred source to see more of our stories on Google. Among the many pesky issues that can confound do-it-yourself mechanics, one of the most simple yet elusive that impacts overall ...

The pumping of an engine’s pistons creates a vacuum in the cylinders, and that vacuum is filled by air drawn in through the intake system. If leaks develop in hoses or engine parts downstream from the ...

Cummins’ 5.9L diesel engines have many wonderful traits, from the simplicity of their design to the durability and reliability of their internal components. However, the powerplants also have parts ...

Boost leaks are notoriously common culprits in underperforming turbocharged vehicles. Coupled with boost lag and diminished fuel efficiency, boost leaks can lead to higher maintenance bills and engine ...

There are a number of reasons your mercedes engine goes off while you are driving and one of them is because of a vacuum leakage. FILE PHOTO Dear Paul, I have a Suzuki Jimny wide model 1997, I need ...