Because the person that rebuilt it prolly did not install new components and used the old ones. Or could have a cracked head or block that wasnt found out because the engine was not magnafluxed.
The pseudolink at the bottom will guide you to videos for this. youtube.com/results?search_query=how+to+blow+smoke+rings
Yes, you can and its not difficult to do. There are several ways to do it. Pop your jaw while forming an "O" with your lips. Takes some practice... you can cheat by tapping the center of one cheek while forming the letter "o". Learn about different ways to blow smoke rings: cigarettes-for-beginners.wikidot.com/how-to-blow-smoke-rings
One can learn to blow smoke rings on wikiHow, an instruction based website for various things, or Youtube where videos made by other people can be found.
the rings are probably bad and need replaced
vtecs do blow blue smoke when the valve stem seals are worn and the piston rings are worn alsoits verycommon in dohc vtec engines
needs overhaul rings ect.
blowby is caused by broken and worn piston rings
you make the shape of your mouth like an o and blow out lightly snapping your jaws while coughing lightly in your neck and pushing out the smoke with your tongue chronologically in other word blow one first then wait for the smoke to settle and then blow again. By the way i am 14 :) By IxoraProductions!
Gandolf the wizard mostly, but Bilbo baggins enjoyed it some himself.
Engine "Blow-by" caused by excessive engine wear usually bad piston rings
put in new piston rings or rebuild kit for the entire motor
It is time for an engine overhaul. The pistion rings/ oil rings and compression rings are either broken are worn out. That is called blow-by. Your engine is done.