88hp 1988 Johnson Outboard with water coming out of Sparkplug

[lacsboy49]

Hi,

I have water squirting out of my sparkplug socket and think its the head gasket. Is this the right thinking? and does anyone have the tourque specs to put the cover back on when I take it off?

Thanks in advance.

 

[AEROCOOK]

Re: 88hp 1988 Johnson Outboard with water coming out of Sparkplug

Likely the water jacket gasket, not the head gasket.

 

[mattLA]

Re: 88hp 1988 Johnson Outboard with water coming out of Sparkplug

Likely the water jacket gasket, not the head gasket.

I can't fine water jacket gasket in my clymer for an 1980 85hp. Which gasket is the "water jacket gasket"?

Thanks.

 

[AEROCOOK]

Re: 88hp 1988 Johnson Outboard with water coming out of Sparkplug

I can't fine water jacket gasket in my clymer for an 1980 85hp. Which gasket is the "water jacket gasket"?

Thanks.

BRP Catalog, 1980 85hp / cylinder and crankcase / item # 29

 

[ezeke]

Re: 88hp 1988 Johnson Outboard with water coming out of Sparkplug

Check the cylinder head gasket first. The spark plug threads are in the cylinder head, not the water cover.

The water cover gasket is #0318335

http://www.iboats.com/V-4-Cylinder-...0661775--**********.242957856--view_id.173902

The cylinder head gasket is 0318358

http://www.iboats.com/Head-Gasket-f...0661775--**********.242957856--view_id.173745

 

[mattLA]

Re: 88hp 1988 Johnson Outboard with water coming out of Sparkplug

Is the water coming from the spark plug hole (in other words - you have water coming from inside the actual cylinder), or is the spark plug firmly installed - and you still get water?

 

[lacsboy49]

Re: 88hp 1988 Johnson Outboard with water coming out of Sparkplug

The water was coming out between the sparkplug and the hole it goes in.

Mat

 

[AEROCOOK]

Re: 88hp 1988 Johnson Outboard with water coming out of Sparkplug

I struggle to see how water could be coming out through the threads between the head and the sparkplug. Is the sparkplug electrode wet with water on it?

 

[mattLA]

Re: 88hp 1988 Johnson Outboard with water coming out of Sparkplug

I struggle to see how water could be coming out through the threads between the head and the sparkplug. Is the sparkplug electrode wet with water on it?

It seems the most likely scenario, assuming that the spark plug is tightened all the way in, that the water jacket gasket is leaking and it only appears as though it is coming from the spark plug threads. Is this possible lacsboy?

 

[lacsboy49]

Re: 88hp 1988 Johnson Outboard with water coming out of Sparkplug

Gotta be honest with you, sure its possible. Noticed it as I was taking the boat out of the water last fall during winterizing. Haven't touched it since. This weekend I was hoping to get it ready and in the water so I posted the question. Now I have pulled up the breakdowns on the motor and can't find the water jacket gasket is it a big job to replace?

 

[AEROCOOK]

Re: 88hp 1988 Johnson Outboard with water coming out of Sparkplug

Item number 29

 

[ezeke]

Re: 88hp 1988 Johnson Outboard with water coming out of Sparkplug

Click the thumbnail.