Logo
FULL SITE MENU

Smoking engine exhaust bellows

T

timaddington

Member
"At least I think that's w

"At least I think that's what it's called. It's a 1989 with dual Alpha One's and 5.0 Merc engines. I took it out and was running it fairly hard when smoke came bellowing out of the engine compartment after just a couple of minutes. At first, I thought it was the shift cable or steering hose up against the exhaust manifold. Upon further examination, it was the actual rubber coupling from the riser that was smoking hot. The engine itself seemed to be running alright and did not even seem hot.

I assume that water from the engine is used to keep this cool. If there is no water coming in, then why is the engine not overheating? Also, it was only the starboard side of the starboard engine that was hot. The port side exhaust seemed to be functioning normally. Is there some common problem here that I shout look at before I start taking things apart?"
 
Most likely that riser is plug

Most likely that riser is plugged up.
avg. lifespan is around 4-5 years.when were they changed out last?
 
"Thanks. I kind of suspected i

"Thanks. I kind of suspected it was the riser since it was local to that one side.

I haven't had the boat that long, so I can't say when they were changed. Based on the general condition of everything else, I'd say five years at least. Is there anything that I should do to verify that it's plugged up? Or should I just change it out?"
 
"5 years is a long life around

"5 years is a long life around here. consider replacing all manifolds, risers. call me for a price later if you like. I'm in the pensa. yellow pages. S."
 
Back
Top