I'd be more concerned about a cracked or broken wastegate hose.

Ever check the manifold pressure with the wastegate hose removed? I wonder if the open hose would cause enough losses for the turbo to remain below 15 psi and fail to trigger the overboost valve?

I've never tested this, but I believe the turbo is capable of pushing waaaay more air volume than you'd ever lose through the broken hose. I suspect there would be virtually no difference in performance either way.

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Dave
Boise, ID
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.........then the wastegate hose integrity is of far greater concern than a stuck wastegate..........but, the former can certainly result in the latter.........

Thanks for the replys I knew I didn't have the right terminology when I posted and some one would point me in the right direction. Any way I'll check the valve and see what comes out.

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If it ain't broke take it apart and find out why.

1983 300SD, 4 speed
1994 C280
1987 300TD wagon
1996 HD Road King

Ride in Peace Eric Peterson, Harley of Macon

How often is everyone cleaning these ALDA pressure lines?

I seem to need to clean them every 3 months otherwise I suffer from no power. The crud is never ending.

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JWJ
1983 MB 300D - > 430,000 miles - Deep Blue - Bilstein Comforts - 0-60 in 24 seconds - 27MPG
1985 MB 300TD (wagon) - > 275,000 miles - Manila Beige - Thule rack - 0-60 in 18 seconds - 22 - 25MPG
Biodiesel, Mobil Delvac 1, and Viton fuel lines!

I'll probably clean this one in two or three years.

But, remember, I'm starting with a brand new line, and a thoroughly clean manifold, and no EGR.

Might even go more than three years.