Step 5: Pressurizing the System - Using higher pressure Shortly after i realized my oversight and reconnected the blow off valve.Īfter you are successfully able to pressure test with 5 psi, you can safely move on to a higher test pressure. When pressurizing the system I couldn't build any pressure. This means you might have forgotten to pinch of a crank case line (if testing before the turbo at an intake pipe) or you left a line large line disconnected, or you have a huge boost leak! On my boost leak test for this write-up I had accidentally left my blow off valve disconnected when removing the intake. Sometimes you will not hear a distinct "leak" sound, for example, like air leaking from a tire. It also helps to do this while it is quiet. It might help to have a friend do this while you inspect the lines. While pressurizing the system, listen for leaks. If you cannot build any pressure or are struggling to make the 5 psi, then you have a large boost leak. Basically, if you lose 1 psi per second (1psi/s), then your system is in good shape.
Mazdaspeed 6 test pipe trial#
But this is just a trial run to see if the system will hold any boost at all.Īfter reaching 5 psi, remove the tire inflator and watch the needle for the rate of pressure loss. Air pressure will build slowly since our compressor is capped to 5 psi. Pressurized the tire valve stem on the boost leak tester using your standard tire inflator attachment (not included). Step 4: Pressurizing the System - Start with a 5 PSI Trial Run Hopefully if you are doing your own boost leak test you are familiar with your compressor. Lets see what happens first before cranking up the boost. Set up your air compressor - Make sure the outlet pressure is set to a minimum level (on this compressor its the gauge on the right) For our first run to pressurized the system, 5 psi is adequate. What does this mean? Well, when you pressurize the system while boost leak testing, some of the air makes it way passed the rings and valve guides and pressurizes the crankcase which can put positive pressure on your crank and cam oil seals. This relieves excess pressure in the crank case system. Step 3: Some Engine Safety Precautions - Oil Cap and Set up the Air Compressor If you would like an additional clamp to secure the kit to the turbo flange, see the "ACCESSORIES" category to add one to your cart. The t-bolt clamp is optional at check-out otherwise, you will receive a stainless steel worm gear clamp. These clamps are highly recommended since they have a higher clamping force and keep the boost leak tester secured under pressure.
Secure the boost leak tester to the turbo. We are testing at this point because everything after the turbo's inlet normally gets pressurized while the motor is boosting You know its the inlet when you can look into it and see the compressor wheel. We want to get to the turbo's inlet flange. Step 1: Access to the Turbo Charger's Compressor Inlet Flange Reference: 2002 Audi A4 built block and stroked to 2.1L, Garret GT3076R turbo with 4" anti-surge compressor housing Any good tuner will ask you this before tuning. So before tuning it, I wanted to boost leak test it to make sure there were no leaks. The motor in the pic was built to handle 30 psi of boost. For example if your turbo boosts 12 psi stock, then you don't really want to put more than that while doing the boost leak test. This is a good target boost to use while pressurizing the system with the boost leak tester. You want to have a rough idea of how much you boost while driving. And when you are making boost, these components are pressurized with air pressure. All these components basically feed the motor the air it needs when running. We can see the turbo charger inlet, outlet, front mount intercooler, blow-off valve, intake pipe, throttle body and intake manifold. Even though this is a modified turbo setup, it still gives a good reference and shows the main components of a turbo system that will be pressurized. If you look at the pic below, you can see how a typical turbo motor is set up. You may have some questions like: Why are we boost leak testing? What is the boost leak tester really doing when we hook it up to the engine and pressurize with compressed air?
Mazdaspeed 6 test pipe how to#
I will show you how to boost leak test using the Pro-Kit fitted with the tire valve stem and the mounted 0-30 psi boost gauge.įirst we need to know some of the basics. Here you will learn how to properly use your boost leak tester.
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