I have a feeling my wastegate is stuck open. I have very little power, at least until I get up to around 2,500RPM, and because of the poor power it takes forever to get up to that point. I took the ALDA off months ago, so I know it's not a bad switchover valve or ALDA. The thing that makes me think the wastegate is stuck, is that I can't seem to move the lever that goes between the actuator and the gate. I've only been able to get it to move maybe a millimeter, of course I can't put much force on it because it's not exactly easy to get to. Is there a way to test both the actuator and wastegate without taking the turbo off first??

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87 300D - Running on Veggie oil; 260,000 plus miles; Original #14 head