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Oct 26, 2024

Smoke Leak Testing for Nissan Skyline : Boost Leak : Vacuum Testing

Smoke Leak tester. Lots of them out there with built in pumps. If you own a turbo car, you should own one. 


Cars are complicated. Nissan Skyline GT-R are complicated, but honestly a lot less complicated than many other cars. Especially newer cars, and even many other cars of the same era, like the Toyota Supra and the Mazda RX-7.  Lots of moving parts. Lots of connections, hoses, and areas for failure. One big thing that can happen, and effect the way the car runs and drives is a vacuum or boost leak.


Vacuum and water lines for an RB26. It looks worse than it really is. 


Depending on where this leak, it can be an inconvenience or can possibly really hurt the engine.  If you have a leak to the boost source that supplies the turbocharger wastegates, you can overboost. If you overboost enough, its very likely that you get preignition or knock, and hurt the engine. 



In this case I was checking out the boost control on this car. Seeing if I noticed any leaks. This particular tester also puts pressure to the system, along with smoke. Its like the smoke you see at a concert, or for Halloween , fog. 

Plug and cap test

Autel Test tools.  Some good products




RB20det vacuum diagram

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