- Picture of a waterpump cummings big cam 350 drivers#
- Picture of a waterpump cummings big cam 350 driver#
- Picture of a waterpump cummings big cam 350 full#
- Picture of a waterpump cummings big cam 350 code#
The wiring harnesses are known to have problems and are very expensive to replace.Īnother issue with the N14 ECM is a faulty fuel solenoid.
Picture of a waterpump cummings big cam 350 drivers#
Usually if you unplug # 1, 2, 3, or 4 injector drivers in time you can save the ECM/injectors. If an injector goes bad it is advised to pull out the wiring from the injector and replace immediately before the faulty wire burns up the ECM motherboard.
Picture of a waterpump cummings big cam 350 driver#
There are 6 injector driver connections on the ECM which are attached to the injectors via a wiring harness.
These early electronic engines offered no protection against the wiring harness shortening out. If this happens you immediately want to shut down the engine. Usually this starts out with only 1 injector shown to be malfunctioning but can quickly spread to others. This means the ECM isn’t grounded to the injector.
Picture of a waterpump cummings big cam 350 code#
A common occurrence will happen when, for example, when the ECM shows a 111 or 343 code in an N-14 Celect Plus model. The fuel system’s main components consists of the injectors, injector wiring harness and the ECM. The L10, M11 and N14 all have problems with injector failures and the surrounding electronics. Cummins N-14 Injector Problemsįor all of the great aspects of the Cummins N14 its Achilles Heel has always been the injectors. In addition to internal changes, engineers also developed an API CF-4 and API CG-4 oilfor the N14 that was much more thermally stable and easier to breakdown on a molecular level. By utilizing this space the combustion chamber moved closer to the top ring which meant the oil got much hotter and burned off more completely. This new design reduced a large open space between the ring and the piston liner. Engineers at Cummins also came up with new pistons that positioned the top ring much closer to the uppermost part of the piston. The N14 diesel was engineered in a way where oil flow is much more uniform thus requiring the engine to consume about 20%-30% less oil than the Cummins 855. In addition of an ECM the N14 was designed for emissions purposes to consume much less oil. In 1997 Cummins introduced the N14 Celect Plus which further fine-tuned the ECM to control many more custom parameters of the fuel system.
Albeit the injectors are still cam actuated the ECM controls the metered flow of fuel to the injectors. The Celect fuel system produces systematic pressure throughout each injection cycle unlike the common rail fuel system of the 855, or older M11 or L10 models. The N14 Celect was the first Cummins engine to feature an electronic injection system. With the advent of the first EPA Tier emissions regulations in 1994 the future of diesel engines was going to be electronic diagnostics.
Detroit Diesel rolled out the first commercial electronic diesel engine in 1987 with its ground breaking Series 60 Engine and Cummins followed suit. The most radical change over the 855 was the incorporation of the electronic control module (ECM). The N-14 was produced until 2001 and saw many changes over its 10+ year run for Cummins. Overall, the biggest structural difference between the 855 and N14 is the air-to-air cooling system changes but both engines are very similar. Cummins listened to it customers and designed a more powerful version of the 855 while maintaining a similar profile and bore/stroke architecture. The N14 engine is the follow up to the vastly popular Cummins 855 Big Cam which was produced 1976-1985.
Picture of a waterpump cummings big cam 350 full#
First designed in the late 1980s it was sent into full production in 1991. The engine features the best of engineering fundamentals mixed with one of the first electronic control system. No doubt, the N14 is part of “1,000,000 mile club”. These engines are the stuff dreams are made of if you’re an old school guy looking for reliability. The Cummins N-14 is a great engine quite possibly the best Cummins engine ever produced. Cummins N14 Specs, History and Problems Cummins N14 Engine History