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 …

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. …

Jun 29, 2025 · Here is a troubleshooting guide I printed off from Cummins Quickserve. Starting on page 7 is a No Start guide. It does give guidance on what to check but the best option is to get fault codes.

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 …

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. …

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.

Oct 2, 2025 · I have a 2003 Peterbilt with a Cummins 8.3 ISC with the caps pump. I have been having issues with the truck, first problem was a break down, i scanned it out and did some testing to …

Apr 9, 2025 · Jake brake denotes Cummins exhaust brake. Are you meaning the Cummins engine brake by any chance? Jake brake is a companies name, they build the original engine brakes and now …