Low temperatures in winter can make starting a diesel engine very challenging. Unfortunately, some people resort to dangerous and incorrect methods to get the engine running quickly, which can cause serious damage. To ensure safety and protect your equipment, we want to highlight six common but harmful practices and provide proper solutions for cold-weather starts.
First, using an open flame to heat the fuel tank is extremely dangerous. This method can damage the paint on the engine's body and even melt plastic fuel lines, leading to leaks. In worst-case scenarios, it may cause the fuel tank to explode due to rapid gas expansion, resulting in severe damage or injury.
Second, heating the oil pan with an open flame is also not advisable. This can degrade the engine oil, reduce its lubricating properties, and shorten the engine’s lifespan.
Third, skipping the cooling water at startup and adding it later can be risky. When the engine is hot, pouring cold water into the cooling system can cause thermal shock, potentially cracking the engine block or cylinder head.
Fourth, adding oil through the intake manifold is another mistake. This can lead to carbon buildup on the piston and piston rings, reducing their efficiency and service life.
Fifth, removing the air filter while starting the engine allows unfiltered air to enter the combustion chamber, increasing wear on internal components like the valves and cylinder walls.
Sixth, forcing the engine to start without preheating using external power can cause dry friction between the crankshaft and bearings, leading to premature wear or failure.
To start a diesel engine properly in cold weather, follow these safe steps: First, use diesel fuel with a low pour point to prevent gelling. Second, preheat the engine and fuel using hot water. Third, add approximately 70°C hot water as coolant to help warm up the system. Fourth, use charcoal or hot water to preheat critical parts like the oil pan, injectors, high-pressure fuel lines, and engine block before attempting to start.
By following these correct procedures, you can avoid damaging your engine and ensure a safer, more reliable start during the winter months.
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