There is a substantial difference with emissions between 2007 diesel engines and pre 2007 diesel engines. Several add on components were designed to support the reduction of emissions. The older Mercedes in the video is your basic engine with turbocharger, charge air system and standard exhaust. 2007 required more emission reduction adding a diesel particulate… Continue reading Mercedes Diesel Engine Emissions Shop Talk
The EGR cooler is one of the most important components on a diesel engine these days since it controls the amount of exhaust that transfers from the exhaust system in to the intake system. Cooled exhaust funneled to the air intake reduces NOx (nitrogen oxide). You would not think raw exhaust would help reduce emissions… Continue reading Mercedes Diesel Engine EGR Cooler Diagnosis
This is a 2007 Mercedes MBE 900 diesel engine with an EOS electronic oil separator engine code. Once the separator has a restriction there is usually oil entering the intake and out the exhaust which of course is easily noticeable. Along with that an engine code will be indicated on the dash. The valve cover… Continue reading Mercedes MBE 900 Emissions EOS Code
It’s hard to believe that the MaxxForce 7 diesel engine regenerating in this video is manufactured by Navistar. Constant issues with these engines have cost us down time and expense over poorly designed components. I know everybody involved with the manufacturing of these models feels bad for the customers out there who are dealing with… Continue reading MaxxForce 7 Diesel Engine Forced Regen
Emissions gets a lot of attention these days especially when Donald Trump starts suggesting he wants to roll back emissions by freezing fuel efficiency standards at 2020 levels all the way through to 2026. This would reduce electric vehicle sales and keep people in gas powered vehicles. The freeze would increase oil consumption to half… Continue reading Mercedes Diesel Engine Emissions
The video shows all the damage to the DPF (diesel particulate filter) on one of our MaxxForce 7 International diesel engines. This is the second diesel particulate filter that has failed this way. It seems to me this DPF has a definite weak spot. Only three years old and this “catastrophic failure” as the dealer… Continue reading MaxxForce 7 Diesel Engine DPF Failure
Note: In this video I said the turbo boost sensor has to be replaced. Now we are cleaning them up with Kleenflo spray or Mr. Clean which works great when you soak the part over night keeping away from the electrical connections. A new sensor costs around 60 dollars so removing soot recycles a perfectly… Continue reading Diesel Engine Emission Troubleshooting
This is yet another post on diesel engine emission codes which will never go away until all vehicles are hybrid electric drive. I think the fossil fuel manufacturers are very happy to supply billions of dollars worth of fuel to the world as long as they possibly can. For now all of the responsible people… Continue reading Diesel Engine Emission Codes
I phoned the representative for this mobile EGR system cleaning machine called the DFS 910. At first I wasn’t interested but thought about the actual labor involved to remove EGR system parts just for cleaning purposes. When adding everything up it was worth a try to get hooked up with this machine and see if… Continue reading Diesel EGR System Cleaning
The HEST (high exhaust system temperature) warning light and the DPF (diesel particulate filter) or exhaust filter are the two main indicators that tell the operator when a manual regeneration is required. The ECU is programmed to initiate what is called a passive regeneration while the engine is running on the highway or in the… Continue reading School Bus Emission Warning Lights
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