ok, ok, I know this has been done to death but...could this pattern suggest a faulty pop off valve? The valve that connects to the second turbo. It's just 3 stupid pounds I need!!! Ahhhh! I've been trying to fix this stupid 2nd turbo problem forever. Oh well, any help is welcome.

 

I had the exact same problem (actually 10-8-8).
Turned out to be the check valves, they
practically disintegrated when they were
removed. Replaced and problem solved.

Pat
85 GSL
93 VR Touring

 

which check valve was faulty? so i can change it out too...

 

I believe there are 2 of them. They were
both faulty and replaced both.

Pat
85 GSL
93 VR Touring

 

which check valves? i see that there is quite a few in there, like 4 check vavles? Also what check valves did you replace it with? OEM or some aftermarket ones? part # please..... i kinda wanna fix my problem, its so stressful to trouble shoot the many possiblities. Please let me know