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Re: Lack of Max Boost: Hooter Valve? Posted by Ari [Email] ![]() ![]() In Reply to: Lack of Max Boost: Hooter Valve?, Tom B, Wed, 24 Oct 2001 14:02:57 Members do not see ads below this line. - Help Keep This Site Online - Signup |
You said that you disconnected the line to the wastegate actuator. Doing that, you should be able to get GOBs of boost. Since you didn't, I assume that you have a stuck wastegate actuator.
With the car cool, reach under the turbo. You'll feel a little lever, connected to a rod that runs to the wastegate actuator. You should be able to move the rod back and forth (along its length) a little- not a lot, maybe 1/4 to 1/2 inch. But it should move back and forth. If you blow *really hard* on the line going to the actuator, you should see the rod move OUT (towards the turbo) a little. If that rod is stuck, it can be holding the turbo at base boost.
The only other possiblity is that you've got some massive leak somewhere. But if you can get mid-yellow, disconnecting the wastegate actuator inlet should drive you into the red.
I've got to say this - the wastegate actuator is a metal cylinder mounted just below and besides the turbo, with a thin rubber hose running to the APC solenoid on the radiator.
posted by 140.157....
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