Check the pcv breather assy or for cracks in the valve cover There's a channel that connect the hose above the turbo to the hose above the intake that connect to the valve cover You can smoke through this hole too if you want How to smoke test for a vacuum leak on your car or truck Short, sweet and to the point! Not sure if there is already a thread about this, but smoke testing a car for vacuum leaks is one of the best troubleshooting steps you can take for idle/drivability issues
The basic idea is to connect a pressurized and smoke filled air source to your intake system, and smoke will pour out of any leaking source (aka vacuum leaks). I have heard of numerous diy methods to detect those pesky vacuum leaks but it usually involves the use of a propane connected to a hose or carburetor spray cleaner aimed at suspected leak sites while the engine is running Both of these methods can present a nasty fire hazzard when used around a hot engine Smoke machines are a better method but the cost of these machines is way beyond the. In the course of helping my friend sort out a lean condition with his mercedes glk280 we have to pinpoint the source of a vacuum leak in the intake plumbing The interwebz tend to recommend having the car taken to a mechanic so that they can perform a smoke test
Surely, there must be alternative means to. Can anyone point me to some instructions on how to test for vacuum leaks with a smoke machine First time attempting to test for leaks and want to make sure i'm testing. Here is a simple vacuum leak smoke test you can do and make yourself so you don't have to pay big bucks at the shop. Checking for vacuum leaks using smoke is a practical and effective method to ensure your engine runs optimally This is a very inexpensive way to test your car for vacuum leaks
If your car is running rough or idling high, you might have a vacuum leak All you need is a bike pump, a pickle jar, and $3 of.
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