This probably isn't good... Photos

[diveman05]

Bought this boat cheap and have had some issues with the engine. Its a 1968 Evinrude 55hp 3 cylinder engine. New spark plugs, new ignition, carbs cleaned, compression 115 in all 3 cylinders.

I finally got it started and it idles, doesn't run good when throttled up so i'm thinking just some tuning there but i put in a bottle of Seafoam (with 5 gallons of gas) to ensure everything was cleaned well. Mixed at 50:1.

Get it running on Muffs and after about 5 minutes i notice this gray sludge coming out of the prop... Its defiantly oily but i'm not sure where from. Any help?

 

[busted-bayliner]

Re: This probably isn't good... Photos

Bought this boat cheap and have had some issues with the engine. Its a 1968 Evinrude 55hp 3 cylinder engine. New spark plugs, new ignition, carbs cleaned, compression 115 in all 3 cylinders.

I finally got it started and it idles, doesn't run good when throttled up so i'm thinking just some tuning there but i put in a bottle of Seafoam (with 5 gallons of gas) to ensure everything was cleaned well. Mixed at 50:1.

Get it running on Muffs and after about 5 minutes i notice this gray sludge coming out of the prop... Its defiantly oily but i'm not sure where from. Any help?

View attachment 155312View attachment 155313

smell it lower unit oil has a distink smell its prolly uspet fuel/oil if it smells gassy then it uspent fuel/oil an that normal

 

[hidef]

Re: This probably isn't good... Photos

Out of the prop it is unburnt two stroke oil and gas. Do not rev the engine on the muffs it is not good for it.

 

[boobie]

Re: This probably isn't good... Photos

After you get done running all the seafoam out of it let it idle for another 15 mins. Then take it to the lake and run the heck out of it.

 

[orbanp]

Re: This probably isn't good... Photos

Do check the gear case oil. If that oil came from your gear case, you do not want to run the heck out of it!

Peter

 

[kfa4303]

Re: This probably isn't good... Photos

A '68 should not be run on muffs. it must be run in a test tank with water filled to about and inch or two below the main exhaust port.

 

[boobie]

Re: This probably isn't good... Photos

Why ? It's got the water pickups on the lower part of the g/c on the sides.

 

[hidef]

Re: This probably isn't good... Photos

The 1968 55 is a muff motor complete with electric shift. OP if you change the gear oil make sure you use Type C gear oil made specifically for electric shift gear cases. DO NOT USE 85W90.

http://www.marineengine.com/parts/j...&manufacturer=Evinrude&section=Gearcase+Group