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So I recently bought this motor used along with a restored shallow sport. Boat is great but the motor has been nothing but trouble. First time I put it in the water there was nothing coming from the tell tale when I started it at the boat ramp. I take it back to him and he says he’ll have his mechanic look at it. An hour later he says it’s fixed. I go check it out and they have it hooked up to earmuffs and a hose and he shows me that it is pumping water.
I get it back in the water... same thing. No water out of the tell tale. I realized later that when the mechanic showed me water coming out of the tell tale, he had it in Forward and was revving the motor a little. I’ve heard that some motors don’t put water out of the tell tale at low rpms except even though water is cooling the motor. So I get it moving a little and if I get it going to around 2k rpms+ then sure enough water starts coming out of the tell tale. But as soon as I slow down and put it in neutral, unless I shut the motor off right away, water stops coming out of the tell tale and then I get an alarm.
So I figure the problem has something to do with the poppet valve. I go to check it out and find that the poppet valve is not there. The grommet is there but the spring and the valve itself are both missing. After installing one, I put the motor in water, start it up, and water is coming out of the motor fine, no alarms. But, as soon as I get above 2k rpms, the motor overheats.
I take it back to the dealer, he says he’ll fix it. I figured there was probably damage to the impeller because of the overheating that had already been done, and when I got the boat back he said he had replaced both the impeller and housing because both were melted. There was also an oil leaker from the tank itself so they replaced that. Replaced the water pressure relief hose from where the poppet valve was because the hose that was there turned out to be the wrong part.
I get it home, hook it up to the hose with earmuffs, starts up right away, sounds good, water comes out of the tell tale right away, no alarms, even after about 10 minutes. BUT, I notice some oil coming out of the back of the cowling. It’s not much and it is not black or anything. I thought maybe it was residual from the oil leak. So I wipe it away. Next day, I come back and there’s more oil dripping down again from the back. Not much, but it’s there.
I wanted to see running it at idle was causing a leak or if it was still just a little more left from the oil leak before. Hook it up the the hose. This time it takes quite a lot to get it started, which was worrisome. Once started, it ran fine, no alarms. I decide to test it in the water. Put it in at the boat ramp, start it up... no water from the tell tale... overheats at idle. I also later noticed that water is leaking a bit from where the poppet valve is, and it wasn’t before. I have a sneaking suspicion that the mechanic removed it again.
so that’s where I’m at.
tl;dr - motor runs fine and stays cool with earmuffs on, but overheats at idle when sitting in water or moving at low rpms. Someone with a similar motor said it happened to him and it was the impeller. Supposedly new impeller already on, but I’m going to check on that right now. Anything else that might be the cause?
I get it back in the water... same thing. No water out of the tell tale. I realized later that when the mechanic showed me water coming out of the tell tale, he had it in Forward and was revving the motor a little. I’ve heard that some motors don’t put water out of the tell tale at low rpms except even though water is cooling the motor. So I get it moving a little and if I get it going to around 2k rpms+ then sure enough water starts coming out of the tell tale. But as soon as I slow down and put it in neutral, unless I shut the motor off right away, water stops coming out of the tell tale and then I get an alarm.
So I figure the problem has something to do with the poppet valve. I go to check it out and find that the poppet valve is not there. The grommet is there but the spring and the valve itself are both missing. After installing one, I put the motor in water, start it up, and water is coming out of the motor fine, no alarms. But, as soon as I get above 2k rpms, the motor overheats.
I take it back to the dealer, he says he’ll fix it. I figured there was probably damage to the impeller because of the overheating that had already been done, and when I got the boat back he said he had replaced both the impeller and housing because both were melted. There was also an oil leaker from the tank itself so they replaced that. Replaced the water pressure relief hose from where the poppet valve was because the hose that was there turned out to be the wrong part.
I get it home, hook it up to the hose with earmuffs, starts up right away, sounds good, water comes out of the tell tale right away, no alarms, even after about 10 minutes. BUT, I notice some oil coming out of the back of the cowling. It’s not much and it is not black or anything. I thought maybe it was residual from the oil leak. So I wipe it away. Next day, I come back and there’s more oil dripping down again from the back. Not much, but it’s there.
I wanted to see running it at idle was causing a leak or if it was still just a little more left from the oil leak before. Hook it up the the hose. This time it takes quite a lot to get it started, which was worrisome. Once started, it ran fine, no alarms. I decide to test it in the water. Put it in at the boat ramp, start it up... no water from the tell tale... overheats at idle. I also later noticed that water is leaking a bit from where the poppet valve is, and it wasn’t before. I have a sneaking suspicion that the mechanic removed it again.
so that’s where I’m at.
tl;dr - motor runs fine and stays cool with earmuffs on, but overheats at idle when sitting in water or moving at low rpms. Someone with a similar motor said it happened to him and it was the impeller. Supposedly new impeller already on, but I’m going to check on that right now. Anything else that might be the cause?
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