ford mermaid turbo + problems

G

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Guest
my mermaid turbo + is pumping out dark gray smoke when its under load, but when I open it up & the turbo cutes in the smoking problem seams to go, & when I slow down again the gray smoke comes back.

The work I have had done is: fuel pump & injectores, lift pump, turbo presure test, fuel presure test, exhauest & inlet presure test & compression test as well as the engine was run from a different fuel tank, exhaust back presure test, & every one of there has checked out to be okay.

this smoking problem came on suddenly & I have no loss of power or speed the boat goes as well as she did before.

can anyone please help with me problem?
 
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