Are there any problems with the Cummins Engine?
Throughout its production history, Cummins has made various changes to the engine in order to keep up with the increasing restrictions, changing from a dual-cam to a single-cam and adding a cooled EGR system to reduce NOx emissions. Despite its popularity, it does have its problems, like any other engine.
Why does my Cummins ISX engine flatten out?
The ISX also has a history of camshaft issues. We discussed this briefly in Cummins ISX Engine Spotlight. In short, an ISX camshaft can flatten out. This is not because of an issue with the camshaft itself, but with the rocker arms. According to Cummins, there was a production of rocker arms that prevented proper oil flow, starving the components.
Why did Cummins change to single cam engine?
It soon replaced the N14, the other workhorse engine produced by Cummins. Throughout its production history, Cummins has made various changes to the engine in order to keep up with the increasing restrictions, changing from a dual-cam to a single-cam and adding a cooled EGR system to reduce NOx emissions.
Why are the rocker arms on my Cummins not working?
According to Cummins, there was a production of rocker arms that prevented proper oil flow, starving the components. These bad rocker arms stick and smack the camshaft, causing the lobes to flatten. You can fix this failure by replacing both the affected camshaft and the rockers.
Which is the most common ISX failure in a Cummins?
The turbocharger is one of the most notorious ISX failures and is expensive to fix. While they are ideal for direct throttle response, VGTs often experience a buildup of carbon, soot, rust and other contaminants.
How many miles can a Cummins ISX engine run?
Low maintenance: A Cummins ISX engine can run up to 15,000 miles between oil and filter changes. Mid-stop cylinder liners: Cylinder liners within the ISX have a strong design to allow for variations in coolant chemistry.
When did Cummins start having problems with EGR?
For example, engines engineered before 2002 will experience more problems with EGR compared to modern types. In 2008, Cummins began noticing the SCR system experienced failing revolving parts, interfering with the engine’s horsepower. Clogged inlets came about in 2010 when recirculation was occurring, also affecting HP.