crank seals

[Suzukigt750a]

Hi Guys,
I brought a kettle to restore which had the sweetest sounding engine. no rattles or noises. Lovely i thought.
I`ve spent thousands restoring it and the only thing i did to the engine other than cleaning it and a fresh paint job was the top end.
Bike now finished runs like a dream.The engine is as quiet as a mouse. Test ride time. If rode very gently all`s ok.
If you open the throttle to give it a bit of welly it pumps oil out the engine breath behind the oil pump.
Am i correct in assuming that the main oil seals are gone?????

[Roger Ackery]

Hi,lovely bike,the seals could be absolutely o.k....overfilled gearboxes can also be the problem,so if you've changed the gear oil recently, take out the level screw on the right hand crankcase cover & see how much dribbles out of the hole,let us know how you get on
Cheers,

[Tonto]

Hi, nice looking bike !
As Roger said, it may well be just an overfill of the gearbox oil - it happened to me a few years ago, left her to drain overnight and collected approx 150 ml of excess oil -
If the seals go, you would normally will get a marked reduction in engine performance and a lot of excess smoke in your rear view mirrors - so fingers crossed its nothing too catastrophic.
Cheers Tim

[yeadon_m]

+1 to possible over filled box. How is the down shifting when you're riding it? my 550B had an overfilled box (my fault) and the only symptom was notchy downshifts.
Good luck!
Mike

[Suzukigt750a]

HI Guys,
Thanks for your replys.
I know when i first filled the engine i only filled until the oil started coming out the level hole.
I`ve just checked and it is over full.
Fingers crossed this is the problem.
I Know ive read or seen a video telling me it`s crank seals.
Will keep you informed.
Don`t know why pictures are upside sown but if you click on them they turn the right way.

[RickyPell50]

Hi no they don't have to turn my screen upside down but may be ok for Roger............................Rick

[Roger Ackery]

Ha,Ha, all ok here "standing on my head"
pictures are now perfect
I've filled my gearbox before to the correct level (running out the hole) gone for a ride & still had more oil coming from hole when screw removed the next day
Roger