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Should the wastegate be able to open while the car is off

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tunernewb92

15+ Year Contributor
342
74
Sep 10, 2008
North Canton, Ohio
Ok so we busted a bolt trying to put on the apexi n1 exhaust we ordered. Couldn't drill the bolt out or weld on a tab to get it out so we had to take the whole o2 housing and turbo off. In doing so we obviously had to undo and take off all the lines and the wastegate. Now my question is should the wastegate be able to open and close when the actuator arm is connected and the car is off? Is there anyway to make sure that we connected it right with the car off? Also, what fuse needs to be pulled to prime the turbo?
Thanks,
Brian
 
There is a triangular connector on the coil pack, if you pull this you can turn the car over to prime the turbo.

As far as the wastegate that depends on how installed it is. Without the wastegate actuator and arm the wastegate should move freely without any significant resistance. With the wastegate actuator on and connected it will take usually about all the strength you have in one hand to even get it to move a little bit, your best option is to hook up a 10-14psi pressure source to the wastegate actuator nipple and see if you can move it with that. As far as hooking it up correctly it isn't really rocket science, if you have the arm on the wastegate dowel with a cotter pin and the wastegate is bolted to the turbo then you are probably fine. If you are concerned about vacuum lines then you really just need a line that sees pressure during boot. Anything after the turbo should work though before the throttle body is preferable.
 
If you disconnect the arm from the flapper at the turbo housing, the flapper should move freely. With the wastegate actuator arm connected, the flapper should move if you apply about 5-10psi of air to the nipple on the actuator. The actual pressure needed to actuate it will depend on the strength of the return spring in your actuator.

When priming, you basically want to get oil up into the head and turbo to avoid a dry start. So you can either use a drill or something similar directly on the oil pump, or crank the car without it firing. Pull the ignition fuse and the coil pack connector and you should be able to crank it over.

EDIT:

Oops...posted the same time as Mork :)
 
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