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 …

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 …

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 …

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 …

Oct 22, 2019 · Rolling down the road and coach completely shut off and won’t restart. Was running perfect until thisn. Its not getting fuel. All fuses, that i’ve found, have been good. I’ve read about an …

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.

Jul 8, 2017 · Not to bring up an old problem with Cummins ISL 400 engines, but I didn't know it was an old problem until we recently (June 2017) experienced catastrophic engine failure and started …

Apr 9, 2025 · I'm under the impression that the 8.9 is the smallest Cummins that was available with either and exhaust brake or a compression brake . Cummins never equipped the 8.3 with a …

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 , …