Originally Posted by tim2658
Sorry guys meant to say it's on a ford mermaid in my pacific, on idle I can hear to spin up, and if I run it on the trailer it throws out black smoke and sounds like it working but soon as I launch it and under load I have no turbo !! The shaft moves about 1-2mm side to side !!
that much lift isn't a problem sounds like you have a loss of turbo pressure elsewhere
is it wastegated? if so check that the wastegate isn't stuck open or the valve burnt away also check for air leaks in the system after the turbo.
exhaust elbows can corrode & restrict the gas flow out of the exhaust
what makes you say you have no turbo? is it smoking heavily as you try to accelerate? you mention smoking on the trailer but not when trying to get the boat planeing, doesn't the mermaid have an enrichment device on the pump which measures turbo pressure & adjusts the pump as required? can you get a guage to check the manifold pressure?
could it be something else restricting the engines performance?