Blog - Natural Gas Vehicle Institute

Safety Notice – Cylinder Collar Fatigue in Mainstay CNG Modules

Posted on January 6, 2022January 6, 2022

Safety Notice – Cylinder Collar Fatigue in Mainstay CNG Modules Leo Thomason Executive Director & Instructor Safety Notice – Mainstay CNG Fuel System Modules If you own, operate or service CNG ... Continue Reading →

Why a Natural Gas Engine Was Slow to Crank and Misfired, with Vapor and Odor in the Exhaust Stream

Posted on November 2, 2021November 10, 2021

Why a Natural Gas Engine Was Slow to Crank and Misfired, with Vapor and Odor in the Exhaust Stream We often get questions regarding the differences between natural gas-powered vehicles (NGVs) and t... Continue Reading →

4 Ways Transit Agencies Can Improve Their CNG Fleets

Posted on August 17, 2021August 17, 2021

4 Ways Transit Agencies Can Improve Their CNG Fleets Transit agencies have four key areas they can focus on if they want to maximize the use of their CNG fleets. They include adhering to the proper... Continue Reading →

The Heavy-Duty CNG Fuel System Inspection Interval Conundrum

Posted on August 13, 2021August 13, 2021

The Heavy-Duty Fuel System Inspection Interval Conundrum We’re asked almost daily about the required interval for heavy-duty CNG fuel system inspections. Our answer is “it depends,” and then we exp... Continue Reading →

These 2 Vehicle Inspections Are NOT the Same

Posted on August 5, 2021August 5, 2021

These 2 Vehicle Inspections Are NOT the Same Has your team ever confused the CNG Detailed Visual Inspection with the FMCSA Annual Inspection? On paper, it might sound like a reasonable mistake, but... Continue Reading →

Minimize Costly Oil Carryover in Your Heavy-Duty NG Engines

Posted on July 29, 2021July 29, 2021

Minimize Costly Oil Carryover in Your Heavy-Duty NG Engines These are the most common performance complaints for heavy-duty natural gas vehicles: Low power Difficulty starting Rough idling Engine h... Continue Reading →

Potential causes of low power in CNG engines

Posted on July 9, 2021

Potential causes of low power in CNG engines The biggest difference drivers report when they swap from diesel-powered vehicles to those that operate on natural gas is that they appear to be running... Continue Reading →

RNG positions natural gas as the better green alternative

Posted on June 23, 2021

RNG positions natural gas as the better green alternative If you don’t currently use renewable natural gas (RNG) to fuel your CNG fleet, chances are you will in the near future. This isn’t simply b... Continue Reading →

Have your CNG drivers voiced these concerns?

Posted on June 16, 2021June 16, 2021

Have your CNG drivers voiced these concerns? CNG technicians get a lot of the credit for keeping your fleet up and running, but don’t overlook the value and responsibilities of your drivers. Not on... Continue Reading →

Will Renewable Natural Gas affect your fleet?

Posted on March 25, 2021March 25, 2021

Will Renewable Natural Gas affect your fleet? You’ve probably heard a lot of buzz around renewable natural gas (RNG). Unlike natural gas that’s derived from deep underground wells, RNG comes from o... Continue Reading →