Originally posted by bballer
Hey, I have a sts rs3 that i am running in my g4 and after taking the engine out to clean for regular maintenance, it has not started up since. I have checked everything i thought possible, and it still doesn't start. I have
1) Checked polarity on starter box, running right way
2) Taken apart engine twice to see if any problems
3) Put fuel directly into engine through glow hole to see if there is a problem with the carb
4) Looked for blockages in tuned pipe
5) Checked to make sure flywheel is on snugly
All of these i have checked, + some other things, and my engine will not start. It almost seems like it has too much compression, but my shims are in the right place and everything is fine. Whenever i try to start it on my x5 box, it will sometimes turn over once, and then the starter box motor will spin the flywheel, but no ignition occurs. I have had great success with nitro problems, but this has me stumped 
Thanks for the help, i appreciate it
bballer 
It may sound stupid but......
Have you checked your glow plug outside to see if it ignites???
Of course i discard that your igniter is fully charged.
When your engine spins with the starter box, and you cover the pipe's stinger with your finger, does fuel reach the carb???
AFM