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...

Nov 6, 2012 · After talking to the Tech at Cummins, I feel better about the Lift Pump and CAPS probability of being pretty solid going forward. He said he personally knew of many OTR's with …

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 …

Jan 3, 2026 · I have a 2000 Damon Escaper w 8.3 Cummins. All pre-start electronics are on. Glow plug lights and fuel pump pressure are sequenced but it Just won’t crank. Has new batteries. Other post …

Jan 27, 2025 · Hello fellow RAM owners. Steelbob611 / Texas here. I am new to this forum and a first time RAM truck owner after a lifetime of being a GM truck and SUV owner. Made the switch and …

Jun 10, 2018 · Any Cummins ISL gurus out there. I have fuel in oil on my '04 ISL 370 Fefanatic Jan 5, 2026 Newmar Owner's Forum Replies: 6 Views: 562 Jan 14, 2026 Dilbert69 DI JA Apparent Regfil …

Jun 23, 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 …

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 …

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 …

Nov 4, 2025 · :welcome: Are you sure about your HP rating ?? What year is your coach ? What series of Allison transmission is in your coach ? 2500 or 3000 ? At 300 HP , a 6.7 ISB is seriously detuned , …