leaking Oil cooler (Through most of the time, the oil passes into the coolant).
Contaminated fuel – See my article on how long fuel lasts.It will also be noted by a sweet ? smell. Usually, you will see the smoke will be a “thick” cloud (Like in the picture at the top of the page). This will be a steady stream of smoke after starting up. Once you are sure it’s water or coolant, stop and fix it. So, if you have this problem, be careful running it for any period of time. If you know anything about compressing water, you know this is not going to end well. This is caused by a compromised part of the engine that has the flow of coolant in it. Your engine is getting coolant or water in the combustion chamber. Water or coolant can cause white smoke from a diesel engine as well. I wrote an article about signs and symptoms of a worn out diesel engine and if you need some tools to fix these issues check out my complete tool guide for diesel techs 2. Remember, if you have an older engine with really low compression and bad timing or low injection pressure, you are more likely to have white smoke. If equipped with glow plugs, could be faulty plugs or module.If it lasts a few minutes after the engine is started and there is a rich diesel smell, ? they may be some cause for concern. Especially if it has been sitting, it could just be built up condensation. If the smoke is really just a puff, there is not much to worry about. White smoke has a lot to do with the temperature in the combustion chamber. As you start running the engine at idle (around 650 or 750 rpm), you will achieve a more effective compression ratio, and the smoke clears. It will often happen at startup in cold weather with lower compression engines. White smoke on a cold start, and then it disappears as the engine warms up Let’s break down the different ways white smoke presents itself and where to go from there. What is wrong really depends on the “type” of white smoke you have. The problem is either raw diesel fuel passing through the exhaust completely unburned or water/coolant entering the combustion chamber or the temperature in the combustion chamber is too low. There are three causes of white smoke from a diesel engine. What causes white smoke from a diesel engine? Let’s look into this issue and figure out what’s going on. The answer is quite simple, but the solution might not be. What is the cause? Maybe you are like me and have to look it up every time.
So, you have some white smoke billowing out of your exhaust.