White smoke could be from water in the cylinders. I hope not. Not sure what you mean when you say "ports". Could you be more specific? Best of luck. Rick.
i mean ther are two small exhaust ports or holes at the back of the shaft where there is a spray of water coming out, i have put my hand there and it is water, i just didn't know if this is normal and the impeller seems ok as there is a steady stream of water coming out