I am completely new to this so be gentle.
I just got this great little boat with the classic 50. I think it is a 1988. The motor is exceptionally clean and corrosion free. The guy I got it from has been fighting a problem with it overheating.
When I crank it up ittakes several seconds to build up a stream. At that time it looks pretty good. When I rev the motor the stream does not seem to increase. I watched a video that made it look like this was not normal. My buddy had changed the pump and housing chasing this problem and felt like it went away for a couple of weeks.
When you put the boat in the water and start running it you can idles and putt around with no problems. When you romp down on it after about 20 or 30 seconds the stream stops and you see some steam in the general area of the back. Of course I have been dropping it back to idle and letting it cool back down. Neither of us have gotten any alarms so we are not even certain that the alarm circuit is functional. I talked to a mechanic about it and he asked about the proper spark plugs. Thoe have been cahnged and they are the correct expensive ones. He asked about mixture and the boat seems to run okay. It has plenty of power. He was leaning toward a cracked exhaust plate and suggested pulling the power head. He discouraged us from pulling and of the plates on the power head. He thinks there is too big of a risk of breaking the bolts. Yesterday out of boredom I rrmoved the plug from the head and poured some vinegar in. I was surprised that the only place I saw it coming out was a slow drip wround the impeller. I did that a couple of times and then cranked it briefly with the plug removed. I got a reasonable stream out of the port but it wasn't exactly blasting out. This afternoon I put a pressure guage on that cylinder head port and could not get a reading of any pressure. The stream was unchanged. My buddy has had the foot off several times checking the pump and is confident that it is in right and sealed well in the shaft.
This is a really nice motor that is worth working on. The mechanic gets a hundred dollars an hour. He really wasn't encouraging us to put it in his shop. I'm sure he was doing us a favor.
Any suggestion will be appreciated. I really hate to pull that power head unless we have tried everything else. It would be nice to have a few more people say that is the next step.
I just got this great little boat with the classic 50. I think it is a 1988. The motor is exceptionally clean and corrosion free. The guy I got it from has been fighting a problem with it overheating.
When I crank it up ittakes several seconds to build up a stream. At that time it looks pretty good. When I rev the motor the stream does not seem to increase. I watched a video that made it look like this was not normal. My buddy had changed the pump and housing chasing this problem and felt like it went away for a couple of weeks.
When you put the boat in the water and start running it you can idles and putt around with no problems. When you romp down on it after about 20 or 30 seconds the stream stops and you see some steam in the general area of the back. Of course I have been dropping it back to idle and letting it cool back down. Neither of us have gotten any alarms so we are not even certain that the alarm circuit is functional. I talked to a mechanic about it and he asked about the proper spark plugs. Thoe have been cahnged and they are the correct expensive ones. He asked about mixture and the boat seems to run okay. It has plenty of power. He was leaning toward a cracked exhaust plate and suggested pulling the power head. He discouraged us from pulling and of the plates on the power head. He thinks there is too big of a risk of breaking the bolts. Yesterday out of boredom I rrmoved the plug from the head and poured some vinegar in. I was surprised that the only place I saw it coming out was a slow drip wround the impeller. I did that a couple of times and then cranked it briefly with the plug removed. I got a reasonable stream out of the port but it wasn't exactly blasting out. This afternoon I put a pressure guage on that cylinder head port and could not get a reading of any pressure. The stream was unchanged. My buddy has had the foot off several times checking the pump and is confident that it is in right and sealed well in the shaft.
This is a really nice motor that is worth working on. The mechanic gets a hundred dollars an hour. He really wasn't encouraging us to put it in his shop. I'm sure he was doing us a favor.
Any suggestion will be appreciated. I really hate to pull that power head unless we have tried everything else. It would be nice to have a few more people say that is the next step.