Hi All. I have a 4JH2-HTE and have seen a few posts on this board about black smoke and lack of power. Well, two weeks ago, it happened to me. Engine
had been running ok, but last time out I topped out at 2,600 rpm
and black smoke was bellowing out the exhaust
We limped back to the boat ramp
, and when I got her home I took off the exhaust elbow
, but it was in great shape. I took a look at the turbo, and was unable to rotate the fins with my finger. I took the turbo off and got a better look at it, and it was definately frozen up. I took it to a turbo shop, and ultimately bought a new turbo from them.
I installed it, and we sea trialed it yesterday. The boat ran better than ever , much quieter and more power.
has about 650 hours. I believe the problem resulted from poor maintenance
by the previous owner. There was a leaky stuffing box which they did not fix. Salt water
was slung around the engine box and I believe sucked up in the air intake, causing corrosion
in the turbo.
One more piece of trivia. The engine model plate on my engine actually says 4JH2M-HTE. The extra "M" has caused lot's of confusion when ordering parts
, but I recently found out that it means that my engine was originally sold "bobtail" without a gearbox
I hope this info helps someone!