poor running minarelli engine. help help By masterburt (Read 288 times)

[masterburt]

Recently changed out the old 50cc piston/barrel installed a new naraku 70cc piston,barrel,head.Changed the oil pump,oilgear,then stator,flywheel.After i done all that 21mm carb 90 jet racing reedvalve i do not have a airfilter installed.
the problem i'm having is i can get the bike to start but its rough as anything it has no exhaust yet either (loud) i'm not getting any responce out of the throttle at all.i noticed some fuel coming from the exhaust port and when it stops it's like it stops dead straight away.then just i installed the old carb and its doing the same standard 50cc 12mm carb.  could this be electricial or overfueling or #? i have no idea's except pull the engine back out and tear down and rebuild..

[Deleted]

your problem is the lack of airfilter and exhaust. 2 strokes usually don't run good without either or so im surprised that without either of em it will run at all.

[masterburt]

Thannks, i guess ill wait for a exhaust and filter then.cheers liam