hi rc world need answers,i have ofna .12s engine that was in my parking lot car and after break in it blow people said it had no compression that was3 season ago. been out for a season had to sale all my good cars and stock over the last few yaers to pay bills!now im back on my feet and getting back in just got a new kyosho for my bday from my wife sorry my boss all i kept was my parking lot car pulled it out so i can get the filling back and practice before i put my new baby on the track! toke this engine apart but i do not see any thing wrong help if a engine loss compression what do i do

Put back ur engine, secure ur glow plug... turn the flywheel... if u still feel strong re-bounce mean engine still got compression... if no, mean compression lost... dun mix up compression n pinch!

dun mix up compression n pinch!thanks for the help but could u clear up the last part can this be fixed buy putting a new crank&piston r just the piston set?

you wont need a new crank just get a new piston and liner

Why not send your cylinder sleeve to Rays for
a pinch. Include the piston with the rod still
attached when you send it in for repair. The
process doesn't cost much and will restore
the compression for many more gallons of run
time.

if less pinch, then get the sleeve pinched. definitely extends life, and its cost effective. but its still 50-50 chance of getting it like new, sometimes one can get unstable running temperature. just my 2 cents