I know for a fact that there's nothing leaking out of the oil injection system, nothing from the tank, from any lines or oil pump, it coming out of the water pump weep hole is the best explanation as it right next to it. I really just want to know is if this leak will cause a lean fuel mixture that could cause damage. The leak is very, very slow and I don't think it would effect anything enough to do damage, but what do you think? I know this may sound stupid, but I plan on keeping this sled for a while and ill eventually have to rebuild the motor at one point or another. If this leak wont cause any damage ill just wait until it either leaks a stupid amount of oil and ill have to replace it or the motor goes and I pull it to rebuild it, replacing that seal at the same time. If it only costs me a few dollars in oil a year it doesn't really bother me.
I cleaned the belly pan and oil off the motor the other day, I've had it running a bit and let it sit for a few days and so far no oil has come out of it. hopefully it just leaked from sitting for some reason but sealed up when started it, I don't know just a thought.
Thanks for the responses!
Well, it could just slowly leak for the rest of time, but you have a lot going on, on that shaft\seal\pump\etc...
And I've never had a seal get better over time, so my money is on it will get worse... and it will get worse all at once and you wont like it...
I maybe getting overly dramatic.
If the tank level is lower that the reservoir line's outlet and it leaks out enough oil it will cause issues with the Brass gear and crank seals.
This is unlikely. The seal will wear out first most likely.
I think the Seal can be changed with the engine in the sled if that is a concern. There is a YouTube on it.
As an aside, I had my 670 backfire and blow out the case half seal, the stuff that goes in between the cases ( grey goo). It blew out right next too the crank res and I thought it was coming out of the weep hole.
After swapping it on the bench I filled the center section with oil and found it was still coming out, but not out of the weep hole.
I drop or two every 15 minutes.
Ended up splitting the cases and resealing it. Saved me from burning down the engine.