Search results

  1. D

    BOG then clunk

    I have a 1983 140 mercruiser 3.0 and a alpha 1 drive. The problem is random and unexpected. Crusing at around 1500rpms the engine starts to bog a little then all a sudden a big clunk and it stops everything in the blink of a eye. Started it back up and ran fine the rest of the day until coming...
  2. D

    Gas or coil? bogged down then wont start.

    I have a 1983 Mercruiser 140 3.0 181. I had a half a tank and filled it up at a gas station that doesn't look like its used alot. it started fine ran for about 5 mins idle. Took it out right as i get out the harbour it bogs down and wont start again. It feels and sounds like it wants to but it...
  3. D

    New lower outdrive. No water flow Alpha 1 gen 1

    Just put in a new lower unit and the water is not flowing. The impeller is new and looks fine. If you seen my earlier post i hit a rock and messed the gears of the lower unit the upper gears looked fine by eye. Any suggestions what it could be? thanks
  4. D

    Lower units the same? Alpha 1 gen 1

    What would happen if i put a lower unit off a 1:65 ratio on a 1:98 ratio. Are the lowers the same? Alpha 1 Gen 1
  5. D

    Throttle control? Unknown

    Okay my throttle control has been messed up ever since i took it off to get the cylinder head on. i took the end off at the control lever. It is still hard to move from move the cable by hand but the lever works fine. Should it be hard to move a control cable by hand? Anyway i move the engine...
  6. D

    Gear ratios? replacing Sterndrive

    Hey, I have a 1983 140 3.0 merc with a alpha one gen 1 drive. What i am wondering is how to find the gear ratio? i broke the skeg and the prop and when i turn the prop it wiggles a bit. So i decided its the end of the season ill just put a used one in. I found a 1.83 ratio i was wondering if...
  7. D

    Timing and valve setting 140 merc 3.0 1983

    Hey everyone, I just replaced my cylinder head. Bolted her on, And tightened the valves i dont they are set right. what do i do once u put on a new head? and how do you time it with a tach and dwell. I am new to all this and want to learn alot from this engine. Also i cannot find the notch on...
  8. D

    Water and Rust specs in cylinder 1983 140 merc

    I was out on the water and my water pump failed. The engine overheated to about 240 f. Imediatetly i turned off the engine, and got towed in. Replaced the water pump and it started right up. it was running a little rough but i thought it was just the normal shake of that motor. Later i pulled...
Top