barrythedude
Seaman Apprentice
- Joined
- May 13, 2006
- Messages
- 32
Mercruiser 50 hp - 1975 for the year - 4 cylinder. Excellent on fuel, starts well, pushes my 14.5 Fiberglass anchor boat up to 32 mph.<br />I do have 2 problems, and I think they are caused by the same thing. If I idle (troll) for longer than 10 minutes, the motor sputters, and finally dies. 
I have to whirl the starter and choke it for it to fire. If I am lucky enough to press the choke before it dies, it will rev up again, and I can go another minute or so idling. The only way to get the idle back is to use the fast idle lever and rev for 30 - 40 seconds. Then I can idle for a little while longer. I had some mercury schmuck who said he can fix anything (uh-huh) and he did find a cracked idle air tube, and it idles all day in his tub, as well as when I have the ears on running water though it. Just when I am on the water does the above happen (is it a load problem?) also when I go to the dock, and switch to reverse to stop, *poof* stalls again. <br />I really like this boat and just want to have a normal fishing experience like everybody else. But the boat shop finds nothing else wrong. The motor fires up just by breathing on the key, excellent, but punch the throttle without a 30-40 second hi idle (even when fully warmed up) and it will stumble and die. <br />Sorry for the long post but I wanted to anticipate any questions. Thanx in advance guys - great group!
I have to whirl the starter and choke it for it to fire. If I am lucky enough to press the choke before it dies, it will rev up again, and I can go another minute or so idling. The only way to get the idle back is to use the fast idle lever and rev for 30 - 40 seconds. Then I can idle for a little while longer. I had some mercury schmuck who said he can fix anything (uh-huh) and he did find a cracked idle air tube, and it idles all day in his tub, as well as when I have the ears on running water though it. Just when I am on the water does the above happen (is it a load problem?) also when I go to the dock, and switch to reverse to stop, *poof* stalls again. <br />I really like this boat and just want to have a normal fishing experience like everybody else. But the boat shop finds nothing else wrong. The motor fires up just by breathing on the key, excellent, but punch the throttle without a 30-40 second hi idle (even when fully warmed up) and it will stumble and die. <br />Sorry for the long post but I wanted to anticipate any questions. Thanx in advance guys - great group! 
