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  1. 2

    Gauges

    Can someone please tell me if Teleflex "Prism" series gauges will work on a 1990 Mercruiser 7.4L 454 Mag with a bravo 3 drive? I tried contacting teleflex and they didnt reply. Im not sure if there are different gauges for different engines or if they are all compatable. Any help is appreciated...
  2. 2

    Exhaust Shutters

    1990 mercruiser 454 mag 7.4l v8. I have that typical rattling sound from the shutters. I am pretty new to boating but pretty handy. Can someone tell me how to change the exhaust shutters? I have the service manual but the directions are very vague. I know they are in the y pipe. Is that all I...
  3. 2

    Bravo 3 trim question

    Just had a new bravo 3 installed. (1990 7.4l 454 mag engine). The trim seems to go up and down fine when i am stopped or moving slowly. When i open it up it seems to me that its not doing anything. Is that possible? Would i definitely notice the drive being trimmed while underway? I see no...
  4. 2

    454 mag W.O.T Question

    I have a 1990 mercruiser 454 mag 7.4L on a 26ft Cobalt. I just got the boat this year. My question is this... At wide open throttle I am running at 4100-4200rpms and about 36-38mph. Does that seem right? (I have a bravo 3 outdrive with the dual props.) Also, at WOT only i have some hesitation...
  5. 2

    454 Mag Belt Squeeking

    Hey All, I have a 1990 7.4L 454 mag. I just got the boat and engine this year. I noticed today at the dock when i start the boat and rev the engine a bit in neutral it squeaks very loud. When i go back to idle its quiet again. Im assuming its one of the belts. Im not much of a mechanic so...
  6. 2

    470 coolant leak (not cam seal)

    I recently had that common leak from the weap hole on my 470. I did the redi sleeve repair and it worked out great. The problem now is that I am either burning or leaking coolant from somewhere else. The engine runs great and the guages read normal. After running the boat for any amount of time...
  7. 2

    470 coolant smell???

    I have an 86 3.7l 170. It seems to be running fine. When i run it fast for a little while she smells like what seems to me like an overheating smell. Like the smell of car when it overheats. The temp gauge is normal though. The smell gets really strong at times. Engine continues to run fine but...
  8. 2

    Engine stalls with throttle???

    86 mercruiser 470. Had boat out all week and was running great. Today after about an hour or so on the water, I opened up the throttle, got to almost top speed and the engine just shut off out of nowhere. It started right back up, but now she wont let me give it any throttle without stallling...
  9. 2

    Alpha One Lower Unit Noise

    New boater here... Had the boat in the driveway today and was spinning the prop by hand and noticed a slight clicking noise. Either way i spin the prop it clicks. Boat was running fine all week. Almost sounds like loose ball bearings or something. (tick, tick, tick) when i spin it. Anyone know...
  10. 2

    Fuel Gauge Help

    Just put in all new gauges. All working fine except fuel gauge. When i fill the tank, the gauge reads 3/4. It seems to work fine when im on the water. The problem is, I dont know if its empty at E or if i have another 1/4. I didnt think it was the sender since it was still working. The gauge...
  11. 2

    High RPMs

    I just bought my first boat. It needed a new prop but the old one had no numbers or anything on it for me to match. I asked around to find out what the right size would be for my boat.(19ft wellcraft american with a mercruiser 170). I ended up getting a 14x19 aluminum prop. I installed it and...
  12. 2

    Fuel Gauge Help

    Newby here... I just replaced all 6 gauges on my boat. The old gauges didnt work. Now all are working fine except the fuel gauge. Can someone tell me my steps in getting it to work? I know there is a fuel sender or something but I am very new to all of this. This is my first boat and i just got...
  13. 2

    Help with zinc anodes

    First timer here... I just bought my first boat. Its an 86 Wellcraft American 192 with a mercruiser 3.7 liter 170 hp engine. I noticed that it was missing all of the zinc anodes. My two questions are as follows: 1) The bolt for the trim tab anode is still there. It is mostly rusty and the allen...
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