11/12/2022 0 Comments How to Replace LB7 Duramax InjectorsWhether your Duramax is a crate engine or a full-sized truck, replacing the injectors in your engine can help keep your truck running like new. Injectors are important components in a truck's fuel system, so ensuring that they are in good shape is essential. You'll also want to check that the new injectors have the proper balance rates. One of the most common symptoms of faulty LB7 Duramax injectors is fuel leaking into the crankcase. Injectors that leak fuel into the crankcase may cause a loss of power and poor fuel economy. Bad injectors may also cause excessive smoke coming from the exhaust. Visit our Dieselogic store for more info. LB7 Duramax trucks are equipped with a 6.6-liter engine that uses direct injection and high-pressure common rail fuel system. One of the most important parts of this fuel injection system is the CP3 fuel injection pump, which draws fuel from the fuel tank and injects it into the combustion chamber. This pump is especially vulnerable to problems if your truck is modified with performance parts such as exhaust or turbo. To ensure a tight and leak-free seal, the injectors should be installed on the passenger side of the engine. The lb7 duramax injectors hold-downs must be tightened with 37 ft-lb of torque. Once these are tightened, the upper valve cover is installed. Gray RTV silicone should be used to create a leak-free seal between the valve cover and the head. The LB7 Duramax is a fantastic engine, but its fuel injectors are notorious for being difficult to replace. Many stock injectors experience a problem known as "white smoke" in the exhaust. The white smoke is unburned hydrocarbons. To fix this problem, S&S Diesel Motorsport and Bosch worked together to design a new injector with a modern nozzle. The LB7 Duramax is prone to head gasket failure. These problems usually occur after about 100,000 miles. Other factors that can lead to head gasket failure include a small radiator and a problematic water pump. Also, some performance modifications such as lifted cylinder heads can lead to head gasket failure. Click here to understand more on this topic: https://en.wikipedia.org/wiki/Unit_injector. While a malfunctioning injector may not cause immediate problems, it can result in increased EGTs, poor fuel economy, and exhaust smoke. A failing injector is also a significant source of engine wear. In addition to causing immediate problems, a bad injector will also lead to poor fuel economy and a buildup of fuel in the crankcase.
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