3hp 1961 3hp johnson twin cyl

[dreamen]

I am getting water in the Cylinder. Is it because of a bad head gasket or? It will fire but not run, pulled the plugs and one cylinder is wet and it is not gas. Appreciate the help

 

[lindy46]

Re: 3hp 1961 3hp johnson twin cyl

Yup, bad head gasket.

 

[JohnRudeMan]

Re: 3hp 1961 3hp johnson twin cyl

Or a bad exhaust plate gasket, the water can get it through the exhaust holes in the cilinder.

 

[1946Zephyr]

Re: 3hp 1961 3hp johnson twin cyl

Do a compression test. That will tell you the head gasket is good or bad. If your compression checks out good, then pull the exhaust cover and examine the plates for pin holes that got eaten through from corrosion.

 

[dreamen]

Re: 3hp 1961 3hp johnson twin cyl

Thanks for the info, will check the compression tomorrow. The exhaust cover is that the long one on the side? There must be 6 bolts or more in it? There is also a smaller one that has some brass reeds. What would the pin holes be in and if there are some these are easly replaced?