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Originally Posted by lakerat
So if the diaphragm fails and the spring is working normal and the seat , I should have a full boost sitituation is this correct, if so then my problem stems from the wastegate failed in a open condition that is not allowing
boost so the the system in whole is not functioning. Can I remove the wastegate to take it apart and inspect it,does it just come off after you remove the nuts. Thanks
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If the diaphragm fails, you should have a full boost situation. However, I don't immediately want to confirm that the problem stems from the wastegate that has failed in an open condition. This is but one possibility. There could also be issues with the turbo itself.
I haven't personally removed the wastegate, but you would want to see if the wastegate is properly seated and the spring is holding the valve closed.
Sometimes the valve gets fouled with carbon and remains open somewhat.