Sludge Draining from 88 Force 125

[Bry21317]

I took my boat out to the lake this past weekend and I find that I have a black sludge coming out the holes on the Lower Unit. Seems to me that it is unburt Gas/Oil.

I have a 50:1 mixture, pretty much exactly. The engine was not smoking to bad. I just checked my Timing and have this set exactly to 30 degrees, at WOT with no plugs and at cranking speed.

I also just resynched my carbs, so they are good to go. I also adjusted the Idle Mixture, a little leaner. I am now at about 1.5 turns out. I used to be about 1 3/4 turns out. This is due to having the Boyesen reeds also, so it must be run a little richer.

I did not have a chance to pull the plugs out and look at them again. I will do this, but they are always wet when I pull them out.

I was running a Stainless Steel Prop, that killed my Hole shot and top end. The RPMS stayed the same about 4300 loaded up. I am sending this prop back and going to get a new one thats a pitch down, and not the SS, but the Aluminum.

Just not sure what is causing the sludge to drain out.

Any help would be greatly apreciated.

Thanks,
Bryan

 

[Bry21317]

Re: Sludge Draining from 88 Force 125

Will do.

This is the worst it has been in a long time. I think that is due to the Prop not spinning all the rpms it really needs. So I have a lower pitch on the way.

I also run the DECARB alot, just haven't done it in about a month. I always use the Deep Creep. I run this on everything I own. It is awesome stuff.

Thanks will give it a shot and let ya know.

Bryan

 

[roscoe]

Re: Sludge Draining from 88 Force 125

Normal accumulation of unburned fuel/oil.

Decarb the motor and it will flush most of that stuff out also.