Category: Emissions

Image of pistols with gasoline and diesel fuel at a car gas station
07 Jul

Diesel Emissions of Passenger Cars

With many of the worlds largest car manufacturers in the eyesight of regulators for their misleading published emissions output figures, we would like to share some information about the topic. Presently, the main driving standard for emissions output by vehicle powertrains are the US EPA Tier 2 and California LEV-II ULEV regulations. In 1999, the […]

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damage catalytic converter
09 Jan

What Damages a Catalytic Converter?

Engine misfires that are not repaired promptly are the number one reason for damaged catalytic converters. A broken engine cylinder can damage the catalytic converter in a car, shortening its lifespan by several years. In some cases, it may even cause the converter to melt down completely. What is a Catalytic Converter? An emissions control […]

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Check Engine light hollenshades
28 Sep

Is Your Check Engine Light On? What Does it Mean?

Few things can ruin a day faster than an unexpected car crisis. You’re driving to work, on your way to dinner with friends or taking the kids to soccer practice when something on your dashboard catches your eye: a warning light. It might appear as a glowing orange engine symbol, or as bold, intimidating type: […]

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Engine Maintainence image on Hollenshade's website
10 Feb

Failed Emissions Test

There are many reasons that can lead to a car failing the state mandated emissions test. FUEL SYSTEM PRESSURE SENSOR AND FILLER NECK GAS CAPPURGE AND VENT VALVE MISFIRE INTAKE LEAK  

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