Blaze_Fox89
New Member
I've searched and searched.
First off, quick back-story. It is a zbox series 3 66cc, worked well, was run with only 40:1 once during break in and hasn't worked since. It didn't seize or overheat. Replaced everything except the piston, twice. Perfect compression, perfect spark up to 2mm, high tensile bolts, no major air leaks blah blah..
Anyhoo, opened the carby half way to make it idle after it's third rebuild. It was working well but after 65km it started to idle poorly again, so I decided to check the oil seals and found that the inner part of the seal had ripped off and was partially eaten by the bearing.
The only thing that I can think of is I used 2 stroke oil to lubricate the inner seal before putting them in and I used a spark-plug socket to seat it. This was several months before use.
Are you supposed to put 2 stroke oil on the inner part of the seals (the face that contacts the crank) or leave them dry when putting them in?
Any input or ideas on what happened/is going on is appreciated. I mentioned the low oil and piston stuff just-in-case it could be that too, the piston isn't scuffed what so ever. Sorry about the story but the next step for this motor is scrap metal if it doesn't run properly, I've tried and checked everything.
First off, quick back-story. It is a zbox series 3 66cc, worked well, was run with only 40:1 once during break in and hasn't worked since. It didn't seize or overheat. Replaced everything except the piston, twice. Perfect compression, perfect spark up to 2mm, high tensile bolts, no major air leaks blah blah..
Anyhoo, opened the carby half way to make it idle after it's third rebuild. It was working well but after 65km it started to idle poorly again, so I decided to check the oil seals and found that the inner part of the seal had ripped off and was partially eaten by the bearing.
The only thing that I can think of is I used 2 stroke oil to lubricate the inner seal before putting them in and I used a spark-plug socket to seat it. This was several months before use.
Are you supposed to put 2 stroke oil on the inner part of the seals (the face that contacts the crank) or leave them dry when putting them in?
Any input or ideas on what happened/is going on is appreciated. I mentioned the low oil and piston stuff just-in-case it could be that too, the piston isn't scuffed what so ever. Sorry about the story but the next step for this motor is scrap metal if it doesn't run properly, I've tried and checked everything.