WATER IN CYLINDER 82 JOHNSON

[bob8587]

I HAVE A 82 JOHNSON 25HP THAT HAS BEEN LEAKING ORANGE JELLY LIKE GREASE OUT THE WATER JACKET/RIGHT AROUND THE SPARK PLUG, AND IT IS ALSO GOING OUT IN LITTLE BEADS THROUGH THE EXHAUST, REALLY LEAVING A MESS ON THE LAKE. I DID A COMPRESSION TEST AND BOTH CYLINDERS ARE AT 90LBS, I DID THIS COLD AND WITH A CHEAP TESTER.I CHANGED THE HEAD GASKET LAST FALL AND THE PROBLEM DID'NT CHANGE AT ALL. THERE WAS A SMALL AMOUNT OF WATER IN THE LOWER CYL EACH TIME I RESEATED THE HEAD GASKET.I'VE READ IN THE FORUM ABOUT EXHAUST COVER GASKETS, OR MAYBE I HAVE A CRACKED CYL WALL. I'VE OWNED THIS MOTOR SINCE NEW AND REALLY LIKE IT. ANY RECOMMENDATIONS FOR TESTS I SHOULD RUN TO PIN POINT THE PROBLEM,OR SHOULD I JUST WRITE IT OFF. ANY FEEDBACK WOULD BE APPRECIATED

 

[clanton]

Re: WATER IN CYLINDER 82 JOHNSON

What are you using for gas and oil?

 

[bob8587]

Re: WATER IN CYLINDER 82 JOHNSON

CLANTON; THANKS FOR THE REPLY. I'M USING THE STANDARD 50:1 MIXTURE WITH A TCW3 OIL. I KNOW I GETTING A LARGE AMOUNT OF WATER IN THE LOWER CYL,AND THE WATER IS MIXING WITH THE GAS/OIL TO MAKE THE JELLY LIKE MESS, BUT I CAN'T FIGURE IF ITS THE HEAD LEAKING, OR MAYBE THE CYL WALL? I TOOK OFF THE HEAD AND CLEANED THE HEAD, PISTON TOPS, EVERYTHING VERY THOROUGHLY,AND WHEN I RESTARTED THE MOTOR WHITHIN 30 SECONDS WATER AND JELLY FOAM WHERE LEAKING OUT AROUND THE WATER JACKET GASKET AROUND THE SPARK PLUG HOLE. I TOOK IT APART AGAIN AND THIS TIME TRIED SEALING THE WATER JACKET GASKET WITH PERMATEX, AND STARTED THE MOTOR AGAIN. THIS TIME THE GASKET DID'NT LEAK BUT THE LOWER CYL FILLED WITH WATER AND THE ENGINE STARTED MISSING.ANY WAY I CAN TEST FOR WHATS REALLY LEAKING? I HATE TO BUY A NEW HEAD JUST TO FIND IT'S A CRACKED CYL WALL.THANKS BOB

 

[OBJ]

Re: WATER IN CYLINDER 82 JOHNSON

bob...another possibility is the exhaust housing cover gasket is blown. This is the flat plate on the port side of the engine. With good compression on both cylinders, like you stated, I would not suspect a cracked cylinder or head right away. Give the exhaust cover gasket a check and set what you find. You don't want to run the engine with water getting into a cylinder. It will destroy the pistion and cylinder over time.<br /><br />OBJ

 

[OBJ]

Re: WATER IN CYLINDER 82 JOHNSON

One more thing bob...did you torque the heads to spec's and are not using the same head gasket over?

 

[clanton]

Re: WATER IN CYLINDER 82 JOHNSON

After you do what outboardjim says, and you still have water, check lower crankshaft seal.

 

[bob8587]

Re: WATER IN CYLINDER 82 JOHNSON

OUTBOARDJIM; I WENT TO THE LIBRARY AND GOT 4 SERVICE MANUALS.BY THE WAY, WHAT DO YOU CONSIDER AS "THE MANUAL"? ANYWAY I FOUND A DIAGRAM AND NOW HAVE REMOVED THE EXHAUST COVER AND GASKETS.ITS A LITTLE MESSY IN THERE BUT THE STAINLESS PLATE IS IN GREAT SHAPE, THE OUTER GASKET TORE ON REMOVAL, BUT SEEMED OK, AND THE INNER ONE LOOKS GOOD TOO.THE CRANKSHAFT SEAL LOOKS TO BE WAY MORE THAN I WANT TO TACKLE. I'VE DECIDED TO SPEND A LITTLE MORE MONEY AND REPLACE THE EXHAUST GASKETS,HEAD GASKET AGAIN AND MAYBE BRING THIS MOTOR BACK TO LIFE. I'M UP IN MINNEAPOLIS, SO I WONT BE OUT TANK TESTING ANYTIME SOON, BUT IT'S TURNING INTO MY WINTER PROJECT. ONCE AGAIN PLEASE RECOMMEND A MANUAL THAT I SHOULD USE FOR REFERENCE. THANKS AGAIN!

 

[rickdb1boat]

Re: WATER IN CYLINDER 82 JOHNSON

Hi Bob, do yourself a favor and get a Factory Manual either at your dealer or at the link below. They are "Motor Specific" and only cover Your Motor, instead of 15 other ones also. You will need your Model # to order one and if you are feeling generous, get the parts Manual too. It will be invaluble!<br /><br /> web page