Most of the time I can find my answer here with a search but this one has me stumped. I have zero boost from the turbo. I've check the normal things like the DV, boost leaks (small one at check valve for brake booster), waste gate and wastegate actuator. I have not completely removed the turbo yet though. The vacuum lines are good and I went through the vacuum engine diagnostic write ups and they were spot on. Aside from the boost problem the car runs like a top.
So I've narrowed it down a bit. On the intake side of the turbo I think I have a decent amount of oil coke to clean out. The turbine fins are mostly clean though and it spins freely with no contact. There is no play in the turbine shaft in any direction. I can hear the wastegate flapper moving when I blast air into it.
I pulled the N75 valve off and it may be my issue. When I apply voltage to it I can hear the valve click open and close. Pushing air through it without voltage diverts it down one side completely. After applying voltage it clicks but it seems half the air is coming out one side then the other.
Both the puck valve and the DV (710N) are new. Anyone have any other ideas? I can post a picture of the intake side of the turbo if anyone wants to see it.
So I've narrowed it down a bit. On the intake side of the turbo I think I have a decent amount of oil coke to clean out. The turbine fins are mostly clean though and it spins freely with no contact. There is no play in the turbine shaft in any direction. I can hear the wastegate flapper moving when I blast air into it.
I pulled the N75 valve off and it may be my issue. When I apply voltage to it I can hear the valve click open and close. Pushing air through it without voltage diverts it down one side completely. After applying voltage it clicks but it seems half the air is coming out one side then the other.
Both the puck valve and the DV (710N) are new. Anyone have any other ideas? I can post a picture of the intake side of the turbo if anyone wants to see it.