25hp Johnson outboard

[Markerss225]

25rl72r Johnson 25hp has melted plastic in exhaust tube? What does that mean? What do I replace? Is the gasket plastic?​

 

[saltchuckmatt]

25rl72r Johnson 25hp has melted plastic in exhaust tube? What does that mean? What do I replace? Is the gasket plastic?​

What part are you referring to....

https://www.marineengine.com/parts/johnson-evinrude-parts.php?year=1972&hp=25&model=25RL72R&manufacturer=Johnson&section=EXHAUST+HOUSING

 

[Markerss225]

Part #1? There was was seam to me like plastic melting down the exhaust housing you can see between the bolts what is still stuck in there. Is that soot? Feels like plastic. Also the gasket between the engine and power head was kinda blown out. The surrounding foam/ rubber like gasket is oil soaked and bloated

 

[saltchuckmatt]

Part #1? There was was seam to me like plastic melting down the exhaust housing you can see between the bolts what is still stuck in there. Is that soot? Feels like plastic. Also the gasket between the engine and power head was kinda blown out. The surrounding foam/ rubber like gasket is oil soaked and bloated View attachment 409559

I just see an old gasket and exhaust build up. Assuming the GC is off, spray break cleaner in there, clean it up nice and install a new gasket.

 

[flyingscott]

Replace the plastic part if it has one. Clean the carbon out.