yaycandy
Aerospace Engineer
Thats crazy ass bad luck if out of nowhere both turbos stopped making boost. Just to perfect
2012 Turbo Replacement
- Thread starter jhardy1
- Start date
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
yaycandy
Aerospace Engineer
Still looks normal
yaycandy
Aerospace Engineer
My pipes are worse and i have 20k miles on the turbos. My car dont burn oil but you can see how much comes out when reving
yaycandy
Aerospace Engineer
It dont got stripes no more. I pulled them off before they would mess up the paint
Update: I'm about done with these "mechanics". 2nd guy noted that there is black smoke coming from exhaust because theirs "oil" in it. (First off I haven't noticed smoke in any quantity thats remotely alarming).
OFC Recommending the turbos be replaced.
Black smoke usually means you're running rich. HMMMMMM Wonder what a turbocharged engine with low boost would be running...
Anyway I'm gonna talk to the guy when he calls and see what he actually did. He said he couldn't find a boost leak, but we'll see if anything was actually done to check.
There does seem to be an actual leak from the oil return line, so at least he found something interesting
OFC Recommending the turbos be replaced.
Black smoke usually means you're running rich. HMMMMMM Wonder what a turbocharged engine with low boost would be running...
Anyway I'm gonna talk to the guy when he calls and see what he actually did. He said he couldn't find a boost leak, but we'll see if anything was actually done to check.
There does seem to be an actual leak from the oil return line, so at least he found something interesting
Ta2dResqr
SHO Member
Has anyone done a leak test with a smoke machine? If the turbos are working but the motor is not getting boost, there should be a lot of smoke leaking that would be easy to find.
Nope, these mechanics see oil and want to throw a new part at it.
Maybe I'll just go down to the local vape shop and have them blow into the intake for free
Ta2dResqr
SHO Member
Not sure how much work you like to do yourself but, a smoke machine is $80-150 on Amazon. Most shops labor rate is in the same ballpark. Buy the machine and you have the tool when you are done or sell it on Marketplace/eBay.
Bad hose to the wastegate should cause overboost because it would not get the "boosted" air necessary to open the wastegate. Now if the C-clip comes off the end of the rod the wastegate could flap open freely if the rod detaches from the wastegate lever. There would be no preload from the wastegate canister to keep it closed.
As you apply pressure to the wastegate canister via your tester you should see the wastegate open. Should start moving around 6 to 8 psi I believe.
You could pull the intake hose (center of compressor housing) off of each turbo so that you may reach the compressor wheel and see if they feel like they spin freely, do not have excessive play, not seized up or otherwise broken.
Last edited:
How do yall get access to the wastegates? I can barely see the shaft on the front one. Remove exhaust manifold cover?
It's becoming clear I'll have to go under to inspect the rear turbo in any way.
Also, why does the rear turbo have 2 bovs before it reaches the intercooler but the front turbo doesn't have any?
It's becoming clear I'll have to go under to inspect the rear turbo in any way.
Also, why does the rear turbo have 2 bovs before it reaches the intercooler but the front turbo doesn't have any?
I attached my vacuum / boost gauge to the line leading to the wastegates from the boost solenoid. As I applied pressure I could see the rods moving on both from above with a flashlight. To see the c-clips you would have to be under the car.
I can't see my rear turbo actuator at all, guess I'll have to look harder
Once you figure out where it is you can see it. I think I actually stuck my hand down there and could feel them move as well.
I found it interesting that both bypass valves are located where they are as well. Probably just a matter of packaging. Since it is a one common pressurized system I guess it works regardless.
I found it interesting that both bypass valves are located where they are as well. Probably just a matter of packaging. Since it is a one common pressurized system I guess it works regardless.
