belching fluid
 

recently after running semi hard for about two hours I have noticed that a considerable amount of sterndrive fluid has belched out of the fluid reservoir -- any ideas as to why would be appreciated -- this last summer the engine was rebuilt and drive pulled and fully serviced

The drive lube got hot!!!!!! and expanded. Also, probably some air in the drive--which expands more than the lube. Get a drive shower to keep temps down.

drive seals are leaking,better get it fixed soon drives can be ugly when they let go.Good luck

What Griff said;)
Try a Simrek shower...the cheapest and best cooling:cool:

you may have drive issues! lowering the drive tmp 50deg with a drive shower is not going to resolve that. needs further investigation.

Audacity, what are some of the reasons or "drive issues" of why the drive lube would be overflowing the resevoir? Thanks

HUGE air pocket...water....overfilled....cracked rez....combination of.

take the top cap off the drive. inspect the bearing and the race....see if it was starved of lube or had excessive heat present. this will also give the current oil level...if you can't see any??...pull the back cover....if none comes out then it was way underfilled...drain the oil and inspect it as well....

i hate you KAMMA...making me type!

seals are leaking and its ingesting water and pushing the fluid upward,it'll look like clean fluid at first but will become a milky nasty fluid soon,need to pull the drive and pressure test it.......

Joe you're too funny---made me laugh!
 

I knew that would stir you a little----you need some practice on good typing skills! ;) :p :D :D

no...i really don't!....i'm a very lazy man....

When
ONE HOT CITY GIRL
posts about
BELCHING FLUID

I feel compelled to respond.
I have nothing new to add to this thread, but before I got all freaked out I would do the following:

With the boat on trailer or lift, trim the drive to neutral (cav plate parallel to hull bottom). Let it sit at least a day like that. Loosen the bottom drain plug (On yours it may be "behind the prop" and you may need to remove the prop to get to the plug). Loosen the plug enough for fluid to run out. If the fluid looks just like the greenish translucent stuff in the reservoir, then you aren't ingesting water. If it is milky or (even worse) straight water then you have a bad seal - do not run the boat like this...

Once you've ruled out water ingestion, the issue comes back to air pocket. If your expensive, factory-trained mechanic did not fill the drive properly, then air can be trapped in the upper section of the drive. When you run the boat, the drive and lube get up around 250-275 degrees and the air expands, pushing lube back UP the hose to the reservoir.

Audacity has the answers. Do what he says.

I just find it difficult to not try to offer assistance to any HOT CITY GIRL who is BELCHING FLUIDS.

verify current oil level first...this way you have some ammo to use on the tech/hack that did the work...more so if the top bearing/cap/race show signs of heat. find the root cause....then you can fix it!

thx for all the feed back -- the air pocket sounds most reasonable due to the fact the seals appear to be in good condition and no sign of water in the lower unit -- thx again for your time and advise