Awesome that you drive an STI and understand how to work on these. Not a lot of people know how to boost leak test and I e made one in the past with the coupler and a tire shredder valve.
It’s my goal to understand how to work on every vehicle I own, runs in my blood. Every turbo Subaru owner should have some knowledge on how to boost leak test their Subarus to prevent any expensive EJ fatalities!
@@miriamvivo4279 so mine is fully built and on 40 lbs of boost but I don’t drive on that map I stay on the 35 psi map and mine had a cylinder 2 roughness but no cel so I did all the test and compression test but even though I had my injectors cleaned last year they go dirty again so I sent them out to get flow matched and balanced and sure enough my number 2 was the dirtiest so now the car is running great again.
Haha unfortunately there isn’t a simple way to check for boost leaks properly. To know exactly what is leaking and how bad, an air compressor and an inlet adapter is the best way
@@GarageQueens The top-mount air-to-air intercooler on the 3S-GTE (USDM Toyota Celica All-trac) is actually pretty trouble-free to remove & install. Can't blame you if you've never poked under the hood of one of those given they're old & rare. *** I specified USDM because JDM and others received a water-to-air top-mount which would surely have been labor intensive.
i used to just blow into my tester for a quick way to find leaks but yesterday changed everything,i found a leak at injector o ring ONLY after a few psi was introduced,without pressure there was no leak so now i add the same psi as my wastegate boost is so i dont miss anything
9:40 😂My first time was exactly like this. The right technique is too push the intercooler against the firewall and to the right and then lift first the the front part (where the hose to the throttle body is) and it will come off easy. Now my question: Why did you cap off the PCV valve at 3:04? I though it should not be capped off because of the pressure?
It’s always putting the top mount back on that’s the stubborn part 😅 Usually you should cap off the pcv valve because as you apply pressure into the turbo inlet, you don’t want to pressurize the pcv valve as that could pressurize the crank case. Looking for boost leaks, not creating oil leaks 😅
@@GarageQueens Maybe I misunderstood something but then you have to cap off only the pcv opening at the turbo inlet and not also at the engine so then when you pressurize the inlet and basically the whole engine the air will bypass the piston rings to the crankcase and can escape over the open PCV openings. Is this correct?
Some people make their own as it’s more cost effective for how little it gets used. But having a garage that frequently has 3 turbo Subarus in it, along with working on them Monday-Friday, having the legitimate kit certainly makes it easier and worth the investment!
It’s always good to check for boost leaks every year on a turbo Subaru. If your bypass valve isn’t opening, it could be sticking and might be a good time to replace it.
@@GarageQueens I’ve replaced it with a brand new 100% recirc bypass valve by turbo smart and same thing I can’t hear it… my homie that owns the same car I do said get an intake but idk if that’s the issue at hand
