ORIGINAL: blw
This is from the Tower's Hobby website regarding their .75 engine:
REQUIRES: Glow Plug: Tower R/C Long or OS Max #8 recommended
you didn't say what plug you were using in your Tower .75.........................i'm stating out the facts from being an actual user of this engine, and for the record, Tower has recommendations on quite a few accessories that are not right. but go ahead with your advice............