When you have a car or a truck that you want to take good care of, chances are you are going to be doing some work on it yourself to make it work the way you want it to. You will be looking for leaks in the vacuum systems and you will need a way to do it. Believe it or not, you can do it with smoke. It is easy to see where leaks are when you blow smoke through the vacuum systems.
You need to do a smoke test vacuum leak to see what is going on. Basically, you will be blowing smoke through the various chambers of the engine parts to see where leaks are. It is that simple. You will find instructions on how to do this when you look online for them. You can even find a variety of videos on YouTube if you look for them too. Then you will see what it is all about.
You need to see if you have a vacuum leak in your truck. You will see indicators that lead you to believe that is the issue but you will have a hard time finding where the leak is if you do not do some kind of test. The smoke test seems to be the most reliable way to find it. You just need to tape and seal off the intake and set up a smoke system with tubes so you can blow smoke into the engine.
When you do this, you will see smoke coming out where the leak is. Then it should be easy to identify where the leak is and how you can fix it. You can then patch up the leak or change the parts that you need to in order to get rid of the leak.