CNG Inspection Interval Changes Approved by US Department of Transportation
Changes to CNG cylinder inspection intervals required by the U.S. Department of Transportation’s Federal Motor Vehicle Safety Standard (FMVSS) No. 304, “Compressed natural gas fuel container integrity,” were published in the Federal Register February 11, 2022, and become effective March 13, 2022. The compliance date is March 14, 2023, but early compliance is permitted. The […]
Rush Enterprises’ Customized CNG Training Program is the Gold Standard for Fleet Service Operations and Employee Motivation
When it comes to CNG vehicle training and safety, do your technicians participate in individual courses, or do they go through a fully developed program designed specifically for their roles? Both options may sound the same, but there’s a sizable difference: courses tend to be taken by employees as reactive solutions to problems they’ve already […]
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 vehicles equipped with Mainstay Fuel Technologies fuel systems, there is a potential safety issue that requires your immediate attention. Two product failures involving cylinder collar metal fatigue occurred in 2019 and 2020 with Quantum […]
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 their diesel counterparts. Sometimes those differences are initially concerning to technicians or drivers who aren’t familiar with NGVs, to include times when natural gas engines may be slow to crank, misfire, or even emit steam, vapor, or odor from their exhaust streams. […]
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 vehicle inspection intervals; establishing standard operating procedures for maintenance, repairs, and potential incidents; encouraging up-to-date training for drivers and technicians; and requiring certification for all CNG fuel system […]
The Heavy-Duty CNG 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 explain. These inspections are both required and essential because natural gas is stored on board CNG vehicles at extremely high pressures — at least 3,600 psi. While most CNG fuel systems are extremely […]
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 the reality is far from it. Below are three (3) reasons why FMCSA is no substitute for CNG, and why it is imperative that you have your technicians follow the […]
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 on low power. Many times, the reason this happens with newer Cummins NG engines is simply because these drivers have to get used to a new fuel delivery system. We’ve […]
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 because RNG is transported through the same pipelines as traditional natural gas, but because of its growing popularity as a green alternative that’s available today. What makes RNG so successful, […]
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 only are they directly contributing to your ROI, they’re the employees who spend the majority of their time in these vehicles. Any issues or concerns are more likely to […]
