Yes, warm it up first with a hair dryer(you can free the piston and sleeve using it too, just use some WD-40). A hair dryer can usually get the enging hot enough so you can't hold on to it for very long. You can easily get it up to at least 140 degrees. Always put the piston at bottom dead center before it cools(which I never did because I was a newb). They don't tell you these things with the cd it comes with. These are some things I didn't do when I got my 2.5, and it lasted me 1 gallon. [sm=frown.gif] I used the heat cycle method on my 18cvrx, always put it at BDC and it has about 3 gallons through it and it still runs like a champ.
