Home › Forum › Ask A Member › 2nd tell tale for Mercury Mark 58 on top of motor › Re: 2nd tell tale for Mercury Mark 58 on top of motor
January 9, 2017 at 4:34 am
#50714
when they are clogged that way you need to remove the exhaust cover and clean the passage out. may be clogged for inches. the bolts tend to break on the cover so I would not do it just add the top tell tail. if it opens up later you can just put a plug in the top one like the latter motors.