Boat is finally ready!

[Sore Thumbs]

Thank you Sir. 

[Basfis]

Thanks. I recently re powered with a rebuilt series 2.  Got conflicting break in info from the dealer. Double oil/no double oil. Near as I can tell, and per manual, no double oil. Was curious what hydrotec suggested. 

[Sore Thumbs]

Nothing about double oil! That would clog your fuel injectors and filters. Causing motor to fail again. 

[fishinwrench]

1 hour ago, Sore Thumbs said:

Nothing about double oil! That would clog your fuel injectors and filters. Causing motor to fail again. 

If the cylinders do not receive lubrication via the injectors (fuel supply) then clogged fuel injectors will not damage the  engine.   

[aarchdale@coresleep.com]

Probably needs some new plugs after a few hours of double oiling

[Sore Thumbs]

My bad wrench. I'm no mechanic. I thought if injectors were clogged it could starve cylinders of fuel causing them to get too hot. 

[fishinwrench]

1 hour ago, Sore Thumbs said:

My bad wrench. I'm no mechanic. I thought if injectors were clogged it could starve cylinders of fuel causing them to get too hot. 

No fuel=no fire....No fire=no heat.

Anyway, it would take way more than a 25:1 oil ratio to clog an injector.  

DFI outboards receive lubrication directly to the cylinders (via ports) and/or directly through the intake manifold, so friction heat isn't an issue.

So what did they determine caused your original powerhead to fail ?

[Old plug]

I know nothing about motors but do know a tiny bit about fuel from experience. You said it was in the shop for a month what grade fuel was in that tank during that period and the line leading to the tank. 

 

[Sore Thumbs]

2 hours ago, fishinwrench said:

No fuel=no fire....No fire=no heat.

Anyway, it would take way more than a 25:1 oil ratio to clog an injector.  

DFI outboards receive lubrication directly to the cylinders (via ports) and/or directly through the intake manifold, so friction heat isn't an issue.

So what did they determine caused your original powerhead to fail ?

They didn't really say. There are several theories why these motors are failing. Pistons not made of durable materials or fuel delivery. Most motors they replace have between 2-300 hrs. Mine had 279. I think the issues were fixed in Series 2. Not sure though

[Sore Thumbs]

1 hour ago, Old plug said:

I know nothing about motors but do know a tiny bit about fuel from experience. You said it was in the shop for a month what grade fuel was in that tank during that period and the line leading to the tank. 

 

Mixture of ethanol and no ethanol gas.