2 replies to this topic

[Ronvp]

Guys, I am new to the forum, and have looked around to see if anybody else had similar isues. I have a 2006 Islandia (2 x 155 HP) and bought the boat new. As of the last 6 months I notice white smoke in my exhaust but only if I am under power. Just idling is OK. I looked a the shop manual (Thanks to Kevin Leclair) and it shows the following

ENGINE SMOKE IN THE EXHAUST (white smoke)
1. Coolant leak
My coolant system is fine, I am not loosing any coolant
2. Intercooler leak (if so equipped)
I have no inter cooler
3. Damaged cylinder head gasket
if my cyclinder head gasket is leak and I am getting white smoke then I must also loose coolant.
4. Water ingestion (Inspect intake manifold for water infiltration.)
I suspect this is my problem
5. Valve stem seals
Same as 3, I should be loosing coolant

I have a closed cooling system, the only intake water should be for the exhaust cooling system.

Has anybody had similar symtoms? could I have a leak from the exhause cooling system in to the exhaust?

[Kevin Leclair]

What temp are your engines running at, do you have a way to tell? Also how do your impellers look, are they spinning freely?

[Ronvp]

Sorry, but I do not know how hot they run, but I have no alarms going off. To see about my impellers I need to get my boat of my lift. The last time I had it on the trailer, it all looked and felt good, but I do need new wear rings. Could it be that my flow restricters (mounted on the exhaust cooling water inlet) could be plugged? In any case, it is on both engines.. I was reading that some steam (especially in colder weather)is OK. What are your toughts?

On the subject of Wear Rings, Do you know what I need to order to replace my wear rings? Can I just order new Wear rings or do I need additional parts? How about using the Freezer method?