![]() ![]() That’s why you’ll want to diagnose any issues early. Which is not only obviously detrimental to your vehicle but also very expensive to fix. This can seem innocent enough but the problem will compound over time and it’s often difficult to diagnose. On the ISX the culprit is often a leaky EGR valve. If the connecting rod or piston gets free of the liner it starts to destroy the whole engine block. EGR Valve Leaks Like many other engines with an EGR, the Cummins ISX is prone to typical EGR problems. If a piston seizes the cylinder liner breaks at the bottom. That means that from the factory you have a cylinder liner that goes into the engine block and it’s supported halfway down the liner. The ISX is a mid stock steel cylinder liner equipped engine. So it’s very difficult to diagnose until you’ve already seen a drop in the performance of your engine. There aren’t specific symptoms that will indicate whether you have these faulty rocker arms. This will eventually cause the lobes to become flat. An issue in production with the rocker arms starved the components of proper oil from which makes them stick and hit the camshaft. This is largely because of an issue with the rocker arms. Notoriously, every model and rendition of the ISX has had issues with the camshaft. If you suspect a leaking EGR valve, it’s best to bring your Cummins ISX to our experts. Before changing your turbocharger, please make sure that you have correctly identified the cause of the fault. White residue left behind by burnt coolant Carbon build-up can be caused by: Hot shutdown of engine Degraded oil quality carbonising in service Infrequent oil change intervals causing oil breakdown in service Air and gas leaks Faulty fuel injector pump/injectors.Coolant consumption that’s faster than normal.Like many other engines with an EGR, the Cummins ISX is prone to typical EGR problems. Let’s run through some of the most common issues.Īdvertised Horsepower: (400hp, 298kW)(450hp, 336kW) With horsepower ratings that range from 400-600 and up to 2050 pound-feet peak torque it’s no surprise that this engine is a favourite for fleet operators and drivers alike.īut despite the engine’s popularity, it isn’t perfect. And the only engine offered by every major Class 8 truck manufacturer. The Cummins ISX is definitively North America’s most popular heavy-duty engine. Initially released in 1998 as a response to tightening EPA emissions standards, the ISX replaced the N14, Cummins’ original workhorse engine. It goes without saying that the Cummins ISX is one of the most popular and well loved diesel engines on the road today. Preface: What You Need To Know First It’s The Popular Kid ![]()
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