(Diesel engines are an exception since ... and how it changes over different rpm and load. Without an air fuel ratio gauge, the only way to tell what your AFR is is to “read” the spark plugs.

There's an old saying in engine tuning that when adjusting the mixture of your engine you can be too rich a bunch of times, but only too ... mounted gauge, and read the air-fuel ratio in real ...

But these sensors were designed to be accurate only around 14.7:1 air fuel ratio. Attempting to build a "gauge" that could accurately deliver air-fuel ratio around 12.5 to 13:1 was challenging and ...

Tires are arguably the most important part of your car, as they’re the only parts that actually ... units and capillary tubes. This air/fuel ratio gauge comes with both black and white faces ...

First of all, there's the emotional element-we were all raised by a pack of wild oil-burners. For a more down to earth explanation, facts, physics, and reason all point to diesel power over ...

A gasoline piston engine that can dynamically change its compression ratio —that ... pre-detonation of fuel. A diesel uses compression only to ignite the fuel/air mixture, and the same thing ...

The higher compression ratio ... fuel and air entering the engine are both regulated. A diesel engine runs very lean (much more air) and can draw in as much air as it wants, controlling the power ...

According to Zack Ellison at Cummins, "White smoke is an indication of unburned diesel fuel ... Black smoke is caused by a very rich fuel-to-air ratio. Either the fuel pump has been turned ...