Sep 5, 2022 · I’m looking to buy an ISL 8.8 or 8.9 engine with the common rail fuel system and without the DEF system. What are the best and worst years to buy? Also, any...

Jun 22, 2025 · The **Cummins ISL 425 HP** (often the ISL9 or ISL 8.9L, depending on year) is generally a **strong, reliable engine**, but like any heavy-duty diesel, it has some known issues …

Sep 15, 2025 · I have a 2025 RAM 2500 with the 6.7L Cummins engine and I want to make sure I use the right motor oil and I've always used Shell Rotella. I looked in the owner's manual and searched …

Jan 27, 2026 · The Cummins® Turbo Diesel engine is equipped with several features designed to assist cold weather starting and operation: The engine block heater is a resistance heater installed in the …

A complete list of all fault codes for Cummins engines with CAPS fuel system. at your engine has a problem. Every sensor and circuit on your engine has a certain expect d reading and voltage signal. …

Dec 4, 2025 · Members discussed oil pressure readings on the Cummins ISL9 engine using the Bluefire ECM reader. The original poster noticed a 68 psi oil pressure at cold startup and questioned if this …

Nov 8, 2018 · It wasn't till the 2019 Cummins (new CGI block) you started hearing about engine failures. What “engine failures” are you hearing/posting about? I have had my ‘24 Ram 2500 w/6.7 CTD six …

Feb 28, 2016 · The cummins rep told me you never know it's happening if everything is working right. While test driving a 425hp we pulled over to change drivers and a high exhaust warning came on.

Jan 17, 2021 · Use the recommended Cummins® electronic service tool or equivalent to find the current ECM code and revision number in the ECM. Compare the ECM code and revision number in the …

Nov 4, 2025 · Members are seeking ways to increase the power of a Cummins ISB 6.7 (300hp) engine for better hill performance while towing a stacker trailer, with a focus on remaining legal in California. …