Are there any problems with the Cummins ISB engine?
Are there any problems with the Cummins ISB engine? The common problems are related to emissions equipment and common rail injection. The EGR system is prone to clogging and that issue is typical to all engines equipped with EGR. The DPF longevity is about 100,000 miles. Some owners prefer to install DPF aftermarket delete kits, which undoubtedly cheaper, but less friendly to nature. What's the difference between ISB 6.7 and ISB 5.9? On top of the block, there is a 24-valve cast iron cylinder head similar to the ISB 5.9. The difference between ISB 5.9 and 6.7 cylinder head is...