Re: 2nd tell tale for Mercury Mark 58 on top of motor

[rusty356]

I believe that the tel tale, makes a 90 degree, bend about 1 inch up the output hole, and this is why, I can not unplug it. I tried everything, that I could and have keep trying, but it will not open up. In order to fix it, I would need to remove the power head, and then the exhaust plate. But in the past, I have had the bolts break off when removing the plate, I and did not want to take that chance, also having a tel tale at the top of the power head assures me that the upper cylinder is getting cooling water! The later model Mercury Mark 450 had a pre taped hole in the top, right where I put mine, and on that motor, i just removed the plug and put in the 90 degree brass fitting and had 2 tel tales!! I have cleared at least 10 stopped up tel tales, and I was really surprised that this motor did not clear, as it has never been apart, to get sealer etc in it. Maybe someday it will clear on its own. My name is Rick Conn and my cell is 303 819 4336 and direct email is conn356@ecentral.com. I really only work on the 55 thru the Mercury 500’s. Use to do Mark 25’s but not any more. This motor with the new tel tale, is a grea motor, runs like a top! Thanks for your help, I do have a restored Pen Yann Swift 13 ft, XGS stepped 13 ft, with a Tee Nee trailer that we restored. I winter in Fl and summer in Foxburg PA, Also have 2 Feathercrafts! I still am not sure how the tel tale exits the cooling jacket, but I do know their is a 90 Degree bend, that my wire can not get thur, and I have put lots of air presser in the tel tale hole also with no results! Thanks Rick Conn