Is your engine underperforming? Our expert shares how a diesel engine compression test could provide the diagnosis.

In this video, we're doing a detailed comparison of petrol, or spark ignition, and diesel, or compression ignition engines.

Is your engine underperforming? A Cenex expert shares how a diesel engine compression test could provide the diagnosis.

Diesel engines don’t have spark plugs; instead, they use the super-heated air created by their high compression ratios to ignite the diesel fuel as it’s injected into the cylinder.