worn out engine?

[blowerhead]

I have a silver pro series model 10323 2 cycle E, serial # 9932708 that has run great since purchase in 1999. I love its light, powerful, easy maneuverability, since I have a left arm but no right arm (lost in accident 60 tears ago).
Last season some oily substance was coming out of the exhaust. Does this mean the rings/ cylinder wall are worn out? I haven't done a compression check. I'm thinking of a new shortblock if such exists.
Any suggestions? Thanks

 

[Rivets]

Sounds like you may be mixing your fuel/oil ratio wrong. Too much oil, have you changed your brand of oil? Could you be using an oil for water cooled engine instead of an air cooled engine. I would recommend using a synthetic such as Opti 2. May take a couple of uses before it clears up. Also, if you haven’t done so change the plug.

 

[cpurvis]

Unburned oil in the exhaust not uncommon for two cycle engines, especially if the fuel/oil mixture contains more oil than the manufacturer recommends.

 

[jp1961]

Hello,

It's pretty common for the Duraforce carb to leak at the needle valve causing fuel to pool in the transfer chamber and eventually into the muffler. You could perform a compression check, most of my Duraforce engines pull 105 to 115 PSI.

Regards
Jeff

 

[1saxman]

Jeff is right, they do this. Opti-2 is a wonderful oil and I recommend it, but even though I understand completely about how it works, I never could bring myself to run it at 100:1. I used 50:1 and it worked great with no smoke after coming off the choke. You can help the carb not stick and flood by using Startron in your mix - just a dash, about 1/2 oz/2 gal. Also, you may need to pick up the back of the mower and drop it from about 6" every so often, at least until the Startron unsticks the float. Putting in a fuel shut-off and closing it when putting the mower away is a great idea but may be overkill if you do the other things and it works. It will work, I've had three of them in the past; 10201, 10323 and 10500.

 

[javjacob]

Carb just needs a new seat and needle. I also recommend putting a fuel shut off valve on the fuel line. I also highly recommend getting the Briggs pilot jet if the engine is surging or hard to start... part #801308

 

[javjacob]

What happens is the needle leaks fuel into the engine and it blows out the exhaust on start up. A fuel shut off valve takes care of the issue.