2011 Gg 280 Head O Ring Leak?

[nightfiref7efi]

I recently purchased a 2011 gg 280 and was running it yesterday and it started smoking more then normal with a odd smell. My first though was the head o rings. But then I saw my tranny oil was milky. The water pump shaft had some play which would cause antifreeze to get into the oil but could that get into they cyclinder? Or could my o ring have been bad and it put to much pressure to the water pump seal and ruin that also? Any help would be appreciated thanks

[sting32]

It is easy for both or either to be the problem. the heads come off so easy, when you need to, I would check it, if you smelled the "sweet smelling" smell that happens when your engine is trying to burn antifreeze, if it was not from silencer, then probably not ... However the smell you smelled could been from overflow hose, and could drip onto exhaust so making that wierd sweet smell. not usually that strong overpowering of a smell as when it fogs out exhaust. if it is coming from exhaust, you will need to check the Orings on the head, IMHO. if Oring is problem you will never keep oil out of the tranny until that is sorted. Heads are interchangeable, so if previous owner had head off for any reason it might be suspect, it takes a dab of grease and steady hands to put head back on cylinder without losing/pinching an Oring.

if you do as recommended by just about any GG mechanic, a kit with new shaft and seal. if you do this yourself, which is pretty basic and easy for most familiar with hand tools and wrenching, make dang sure you have all the parts, I put a tiny amount of grease into the seal when I put shaft back into place, make dang sure you put the seal in the correct way. gasgasinfo (username) on Youtube used to have videos uploaded on how to fix most anything on a gasgas including this, they were down for a while, I hear they are back up.

Excuse my absolute ignorance of when the date was, but the little impeller shaft was never hardened right/correctly for many years production, and replacement parts were same. I was reading or told that they finally tackled this issue, so new kits should have harder shaft. It used to be a problem I faced about every 16 months of riding. yeah I ride year round, many events and moderate to heavy practice time...

explanation of what is the issues... on the old - softer shafts, the seal can and will wear a groove in that little shaft, which in effect ruins the ability for the seal to operate like is should, usually expanding antifreeze, created enough pressure to blow past seal and even a few drops of AF in trans oil, makes a cloudy mess of the oil... when you repair I suggest cheapest trans fluid, fill ride a few minutes and drain and fill again, then put your good normal oil in.

Edited September 7, 2014 by sting32

[crazybond700]

I recently purchased a 2011 gg 280 and was running it yesterday and it started smoking more then normal with a odd smell. My first though was the head o rings. But then I saw my tranny oil was milky. The water pump shaft had some play which would cause antifreeze to get into the oil but could that get into they cyclinder? Or could my o ring have been bad and it put to much pressure to the water pump seal and ruin that also? Any help would be appreciated thanks

The waterpump is an issue, needs refurbishing from time to time. The axle is grinded in a bit and so you need new axle (and rehaul kit). Cooling liquid could destroy your clutch plates so its a point to keep checking.

If its your only problem is hard to tell trough the internet.