So do you have an idea where the leak may be coming from - reference the video.
GM 1.4L Turbo Boost & Coolant Leak Testing Kits
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Can't tell from the video but it's a huge leak. Start spraying everything in the engine bay with soapy water and see where it starts bubbling.
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It occurs when I hit 13-17 psi, but only with constant pressure. When I drive it only happens on occasion and I can tell because the engine bogs a bit.
On my second try, I did spray soapy water and no bubbles. It does get louder as get closer to the bottom of the throttle body spacer though as seen at about 2:20-2:30
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Hi Blasirl,
Did you ever found the leak? Asking because I might have a similar if not the same one lol.
I have since then, but have corrected them so far. I do not think they are related as the leak is not something that occurs at normal boost levels.
The 171 was from when I checked on the orange nipple and accidentally pulled the clip out too far and subsequently lost the plastic ring when it and the o-ring fell out.
I've cleaned the MAF &, Turbo Boost sensors as well cleaning and re-oiling my air cleaner and that has cleared the other two.
P0420, p0171, P0?? I forgot the last one, but it was like P0129 if I remember correctly.
The 171 was from when I checked on the orange nipple and accidentally pulled the clip out too far and subsequently lost the plastic ring when it and the o-ring fell out.
I've cleaned the MAF &, Turbo Boost sensors as well cleaning and re-oiling my air cleaner and that has cleared the other two.
P0420, p0171, P0?? I forgot the last one, but it was like P0129 if I remember correctly.
I know this is older than dirt, but it just occurred to me that you could possibly use a portable air tank with the hose modified to attach to the leak tester. I bought mine from Menards for $20 or so.
This is one from HF: 5 gallon Portable Air Tank
With this coupon good for the Holiday it will be only $23.99
Or if you can't make it this weekend, this one is good to the end of the year:
An old post I know but I finally got around to boost leak testing the 1.4 turbo... wow! Throttle body connection was leaking like crazy (fixed by tightening the clamp) and a significant leak along the front of the valve cover gasket.
I didn't get to the soapy water test as I have probably found most of my leaks and the valve cover gasket was spitting oil at me. So I'll fix that first.
No underboost codes even with these leaks so I assume my turbo is working well, even at 120,000 miles.
I didn't get to the soapy water test as I have probably found most of my leaks and the valve cover gasket was spitting oil at me. So I'll fix that first.
No underboost codes even with these leaks so I assume my turbo is working well, even at 120,000 miles.
OK so valve cover gasket replaced with a Felpro blue silicone deal.. Much better, and no leaks. The old gasket came out in pieces.. Yes a genuine GM gasket.. geez.
Now the oil filler cap is leaking (no biggie), fixed some leaks where I connected up my home made fitting for the PCV bypass kit.
I have one leak at the base of a fuel injector.. These are just standard O rings yes??
I need to jack the car up to get to the intercooler connections but I ran out of time.
The thing is certainly holding a lot more boost than it was!
Now the oil filler cap is leaking (no biggie), fixed some leaks where I connected up my home made fitting for the PCV bypass kit.
I have one leak at the base of a fuel injector.. These are just standard O rings yes??
I need to jack the car up to get to the intercooler connections but I ran out of time.
The thing is certainly holding a lot more boost than it was!
Good to hear its helping you to find these, mine has came in real handy!
Yeah I'm amazed how many places it was (and still is to a degree) leaking.
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