Originally posted by Radil
...why dont you try to give me your mail id so that in future (if you are free)
I am not free, but I can be extremely cheap sometimes.
Seriously, you are welcome to email me by clicking on the "e-mail" button below any one of my posts here. Or better yet, post your question here and get everyone's opinion instead of just mine.
You'll probably get a lot more help here if you can give more description of the particular engine (brand, model number, etc.) and plane. Pictures can help a lot also.
Good luck.