keepNitreel
Chief Petty Officer
- Joined
- Aug 21, 2008
- Messages
- 446
Hello all, I have searched this great forum and found many threads with answers to almost all of my questions without having to post. But I have found nothing on my spark plug question. I recently (Sunday) picked up a 1987 50hp force model# 507X7B SN# 1285 and I notice that the spark plugs in them were L77JC4. From threads that I did read that contained Spark plug info the proper plugs for this motor is L82c or NGK B7HS. I was told that the engine has no spark (have read all treads regarding no spark) and both coils are cracked (also read threads on cracked coils) but it turns over. The motor was free so I don't mind shelling out $200 on new coils. So my question is, should I change to the proper spark plugs or stay with what was in the motor but buy new ones? Also what possible damage can or has resulted from the use of the L77JC4 plugs that are in there now?