engine Archives - Page 2 of 14 - UnderhoodService
Diagnosing Crankshaft Position Sensors

Modern engines need to know the position of the crankshaft and camshafts.

Spark Plug Evolution

Spark plugs have changed over the years.

ECM Damage

Engineers have devised two strategies that can be called the “immune system” for the electrical system.

Ignition Coil Output

To see inductance inside the primary windings, use an amp probe placed around the positive wire for the ignition coil.

Fuel Pumps and Cranking

Diagnosing the problem comes down to understanding what causes a loss of fuel pressure.

Auxiliary Coolant Pumps

Don’t be fooled into thinking that these pumps will go away with the surge in hybrid and electric vehicle production.

Ford EV Opportunities

Despite what you may imagine, there are still maintenance and repair opportunities in a Ford Mustang Mach-E.

Oil and Carbon Deposits

Here’s how oil can influence carbon deposits.

Fuel Systems – Direct Injection

The configuration of any GDI system will vary according to age and application.

Solving No Heat Complaints

Here are 10 guidelines for making sure a customers heat functions.

BMW Spark Plug Replacement

Here are a few things that you need to know before replacing spark plugs in a BMW.

Best Practices for Turbo Services (VIDEO)

Turbo performance can only be impaired by mechanical damage or debris. Sponsored by Standard Motor Products.