175 Mercury Sport Jet water in Cylindar

[relowrie]

I have 1997 Sugar Sand with a 175 Mercury 175 Sport jet Engine. I just got, and it has been really hard to start, I had attached a external water source to test the engine, when I pulled the plugs I noticed water comming from the bottom plug on the Right Bank, no other plugs. Suspect a blowen head Gasket, could this be the caused and was it posable that the gasket blew because of overheating by a defective Thermostat?

 

[KCLOST]

Re: 175 Mercury Sport Jet water in Cylindar

Wait a minute Robert!!!!!!<br /><br />Was the cylinder full of water to the point that it ran out of the plug hole?<br />Is that piston moving up and down properly? Check it by moving the flywheel while in neutral (and the engine off).<br />Have you checked the compression of all the cylinders?

 

[relowrie]

Re: 175 Mercury Sport Jet water in Cylindar

With the spark plug out of the engine, and a water hose hooked up to the external water test hose (the hose adapter for running the engine out of the warer) water was comming out of the cyl, when i cranked the engine over. Befor i removed the plug the cyl filled with water and prevented the engine from turning over.<br />I had firs taken this boat to the lake, and it started with a great deal of effort, the engine ran but would not idle, so took home for this instection.

 

[WillyBWright]

Re: 175 Mercury Sport Jet water in Cylindar

Pull the head and see. Hopefully that's all it is. Head gaskets aren't expensive and all you need is a few regular tools and a torque wrench when you put the head back on. I guess you know why it was for sale now.