'61 Lark lll

[c_hawk]

I just replaced the impeller and thermostat in a 1961 40 hp lark.I Have not ran it in almost a month. After impeller replacement she started up and water flowed fine, although it smoked quite a bit more than it did last time I ran it, could this be from some of the gas evaporating and making a higher oil to fuel ratio? Also a white greasy substance is visible in the exhaust outlet by the prop.Any Ideas? Thanks in advance for your thoughts.

 

[c_hawk]

Re: '61 Lark lll

I forgot to mention that it seems to smoke a little more with the hood off.

 

[c_hawk]

Re: '61 Lark lll

Any help would be greatly appreciated.

 

[tmcalavy]

Re: '61 Lark lll

The smoking is normal, especially if you're using the correct 24:1 fuel/oil mix. The white goop/crud is just exhaust gunk. Neither will be noticeable on the water.

 

[c_hawk]

Re: '61 Lark lll

Thanks for your reply.

 

[F_R]

Re: '61 Lark lll

You mention smoking with the hood off. Are you saying smoke is getting inside the hood? That will happen if you leave the o-ring off the top of the water pump housing.

 

[c_hawk]

Re: '61 Lark lll

I left the old o-ring on. It looked fine. I'll check and see if smoke is getting in the hood. Thanks.