Thread subject: Whaler Central - Boston Whaler Boat Information and Photos :: Water in Cylinder.

Posted by mc_outraged on 07/11/08 - 6:35 PM
#1

1985 Outrage. After sitting in driveway for a week since it's last startup. the boat wouldn't start. It would crank over but not ignite. Mechanic said something about water in one of the cyclinders but I don't have a full report yet. Any Ideas. It's the origianal 150 Evinrude that came with the boat.

Posted by Binkie on 07/11/08 - 8:34 PM
#2

Blown head gasket on one bank?

Posted by Jeff on 07/11/08 - 8:50 PM
#3

Propably however, it would have to be very blown for water to be sitting in a cylinder. Something must have been wrong for a long time if that was the case. You can see here my old motor when I blew the head gasket. It was just a tiny crack. I could tell something was up as the boat was very slow to plane and gain power. Put it on the trailer and pulled the plugs. I found one that was perfectly clean and that was a dead give away. Pulled the heads to find the crack and a scuffed cylinder wall and cracked ring from overheating. No water in the cylinder though because it had been turned to stream (thus cleaning the plug). This is why I would be surprised that there would still be water in your cylinder. Are you sure the motor was fine last week?

Edited by Jeff on 07/11/08 - 9:48 PM

Posted by mc_outraged on 07/12/08 - 6:29 AM
#4

She hasn't been in the water for about two months but started up fine in the driveway every other week up to now. Is it possible that water got into the tank is does it get filter out before reaching the engine. If it is a blown head, how much will I be looking at? Thanks for all your help. Im a newbie to this .

Posted by Jeff on 07/12/08 - 7:31 AM
#5

If you had water in the fuel you would have water in all of the cylinders. However, for it to be still sitting in the cylinders I doubt that the motor would have run with that much moister. My motor ran fine in the driveway with muffs on with the blown head gasket. It is only when under load that you can obviously tell if something is wrong. However since you said it was running on a hose in the driveway I can now understand way there would still be moisture in the cylinder. The motor probably never got hot enough to get rid of it.

Cost of rebuild has a lot to do with how damaged the block is and also if it is a freshwater or saltwater motor. My motor is a freshwater only motor so it dismantled very quickly and easily. Heavily used saltwater motors tend to be a lot motor work due to seized and deteriorating, nuts, bolts, and other fittings. Next, once apart what need to be fixed or replaced. Are the cylinder walls scuffed or scored? Can they be just honed and saved or do they have to be overbored and hope for the best. New pistons, bearing, rings? How much are you willing to do yourself?

With my motor I derigged the powerhead myself and took it to my mechanic. He was able to save the cylinder through rehoning it (had him do all of the others was well), I had him replace all of the pistons and they all got new rings. All new bearings from the crank to the wrist pins, all new gaskets through the entire motor, all new thermostats, and he rebuilt the carbs. I brought the motor and boat back to him where he reinstalled the powerhead and rigged it back up. I was at $2500 when finished.