Break In Running Rough

This is a hot ticket item, if they would ever sell it to you:





and this alternative option:









and another example using larger engine capacity:




 
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and OS engines did produce this one commercially


http://www.os-engines.co.jp/english/2007spring-summer/fs200sfi/index.htm

not sure what came of it.

they do hold the prize for the smallest commercial EFI with a .91 version...

26787_14206.jpg

rare as, seems to be one of those typical "japan only" releases.

note. twostroke.


i wouldnt mind getting one of the ectron kits for my postie one day. compliment the cams and the 140...
 
Still sounds like it COULD be a badly vented cap. The OP didn't say if he tried running with the cap OFF.
And yeah, getting a little off topic. We're on this thread to solve THIS problem. The guy probably isn't gonna try putting automatic fuel adjustment mechanisms or custom made carbs on his bike. I'm not saying it ain't interesting stuff, It just don't really help the OP much. So ya'all can tell me to F-off if ya want, It wont hurt my little feelers, It's just the opinion of this old geezer. Lets try to help the dude that started this thread.
Big Red.
 
had a couple engines recently had cold compression at 110lb - both ran weak past 1/2 throttle - clean out crap from one of the transfer ports & thinner head gasket took one to 125lb & ran acceptably, but not really nice - heads are large dome, so will try a smaller dome head sometime soon

side note on injector - I'd be happy with a system from an old moped where one filled the gas tank, then pushed a plunger that squirted a measured amount of oil right into the tank - easy & clean
 
side note on injector - I'd be happy with a system from an old moped where one filled the gas tank, then pushed a plunger that squirted a measured amount of oil right into the tank - easy & clean

i like that :)


tis true. i got carried away. i forgotten what was even wrong with the bike in the first place!


fuel cap and or gunk/water in the carb... ;)


OP! OP!!!!! where are you, OP? can you ask your question again ? :giggle:
 
Not"carried away" HeadSmess, Just Enthusiastic.
But yeah, Could be a few different things. Cap vent, Clogged carb, Bad coil. Elec. short, ect, ect.
Big Red.
 
My Bike is now running much better. Played with the oil /Fuel ratio and I can now run a consistent 20 MPH ( which is as fast as I want to go) It idles perfectly....Thanks to everyone's suggestions !
 
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