Engine
This pertains 5.9L and 6.7L 24 valve ISB engine with common rail fuel system. This article area covers what is not covered below.
Subcategories
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Air & Exhaust
Everything pretaining to air and exhaust systems. This includes air filters, turbos, intercoolers, manifolds, etc.- 2 Cummins articles
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Cooling
Everything pertaining to cooling systems including coolants, radiators, fans, water pumps, etc.No Cummins articles here yet -
Electrical
Everything pertaining to electrical and computer systems. This also includes charging and starting systems.- 28 Cummins articles
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Fuel
Everything pertaining to fuel system. This includes injection pumps, injectors, lift pumps, filters, etc.- 6 Cummins articles
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OBDII Error Codes
DTC Codes and Troubleshooting.- 63 Cummins articles
4 Cummins articles in this category
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I bought a 2016 Ram Cummins 2500 Crew cab short bed Laramie 4x4 on May 30th, 2026. Everything was working great until a week and a half ago, when my DEF reductant sensor started pegging empty or full repeatedly. I looked up the reductant sensor, and it was around $700. I figured that it was time for a full delete instead. I bought a complete SPELAB delete kit for $1,224 shipped - EGR valve and cooler delete, DEF, DPF, and SCR delete, and it came with a H&S Mini Maxx V2 tuner for the dele
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6.7L Ram Cummins EGR Delete Disclaimer This article is written for offroad use and/or track racing. EGR deletes are illegal for highway use in the US. EGR Delete The first step you'll have to do is disconnect the battery grounds and drain the coolant from the radiator. You only need to drain about 1/2 the coolant out since you are only worki
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CYLINDER COMPRESSION/LEAKAGE TESTS CYLINDER COMPRESSION PRESSURE The results of a cylinder compression pressure test can be utilized to diagnose several engine malfunctions. Ensure batteries are completely charged and the engine starter motor is in good operating condition. Otherwise, the indicated compression pressures may not be valid for diagnostic purposes. 1. Disconnect the fuel inlet line to the fuel filter housing. Plug the fuel line from the fuel tank. NOTE: Failure
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Thanks to chknkatsu over on CumminsForum for this one. Took me a long to figure out how i wanted to do this without interfering with the everyday use of the truck, that meant not eliminating the spare or taking up bed space. I also wanted two compressors for quick recovery and redundancy in the case of one of the compressors going bad. I also wanted to make sure all the wiring terminations and relays were easily accessible. I sized the wires accordingly to reduce voltage drop.
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