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2008-2009 Suzuki DF 9.9

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  • Big Jim
    replied
    Yeah just have the impeller replaced and easily eliminate that factor. Should do it every so often anyway depending on use.
    I replace mine on a twin f-100 setup every season but I rack up about 900 hrs roughly a year and can tell when they start wearing out, plus the boat is usually in the harbor year the year-round. It's also a good chance to replace prop seals and inspect gear shaft at the same time if need be.
    Local mechanic told me they had to replace the shaft that drives the lower unit because the owner never pulled his lower unit off to change impeller or inspect anything in the lower unit; apparently when boats sit year after year unused thru the winter the seals eventually dry out and actually will groove the shaft and you won't know it at all because there's not a tell tale giveaway sign that something is amiss. I believe they found the problem because the motor was making a slight rattling sound at idle and they couldn't find anything wrong with the powerhead.
    A lot of extra info here I know but figure it's worth passing along as it's easily avoidable with an annual inspection.
    PS--- the Hondas I had on another boat wouldn't pee water until motors where warm, sometimes 15 or so minutes after a high idle in hrs harbor (aka winter in Whittier, 10 degree temp)

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  • bigiron
    replied
    Originally posted by AKExplore View Post
    Garyak,

    When sea water evaporates it leaves salt deposits. You kicker was run in the salt. If it was not flushed with fresh water after running in salt water, then you have salt deposits in the cooling chambers in the motor. These can then travel through the cooling system when water is run through the engine and potential clog small openings such as the water pump indicator hose, end nipple, etc. The Yamaha's that I have run will normally have this problem in either the hose or the nipple at the end of the hose. I have had salt crystals come out of the water pump indicator after I have cleaned out the nipple end with a small plastic tie wrap.

    Is there a high temperature alarm on the kicker? If so and the alarm has not sounded when you have run the motor, then you have an obstruction somewhere in the water pump indicator route in the engine.

    Doug
    you hit the nail on the head. i have an 8 hp Suzuki for a kicker and had the same problem, 285.00 later it was flushed cleaned new water pump and works like a champ. now when i get out of the salt the first place i go is to a fresh water lake/river back the boat in fire both the main and kicker and let them run for a while. this will clean the pump and the kicker. my Suzuki does not accept the "ear muff" type water supply for flushing so its a barrel or the lake. have not had a problem since

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  • Frostbitten
    replied
    Originally posted by Garyak View Post
    Quote from Frostbitten: "I ran that exact same motor for a few years, and I never had a problem running it in a tank (old kitchen trash can) and water spitting from the tell tale with no worries."

    When you say "spitting", do you mean a droplet now and then or a steady stream? Either way, going to open it up tomorrow and check things out.
    Steady stream...worked as advertised. Pop that lower unit off and replace the water pump. It's very easy to do, probably take you an hour and a half max.

    Leave a comment:


  • Garyak
    replied
    Quote from Frostbitten: "I ran that exact same motor for a few years, and I never had a problem running it in a tank (old kitchen trash can) and water spitting from the tell tale with no worries."

    When you say "spitting", do you mean a droplet now and then or a steady stream? Either way, going to open it up tomorrow and check things out.

    Leave a comment:


  • Frostbitten
    replied
    I ran that exact same motor for a few years, and I never had a problem running it in a tank (old kitchen trash can) and water spitting from the tell tale with no worries.

    So it won't pump water when running in a tank, but you can force water through the block with the flushing port....sure sounds like a water pump problem to me.

    Leave a comment:


  • Garyak
    replied
    Quote from AKExplore: "Is there a high temperature alarm on the kicker? If so and the alarm has not sounded when you have run the motor, then you have an obstruction somewhere in the water pump indicator route in the engine."

    I really don't know if there is an overheat alarm. Since I was pretty sure I wasn't getting circulation I only ran it for a couple minutes at a time to avoid over heating so I doubt I'd have set it off even if one was present and functioning. When I turn the key on prior to starting, I get a tone until started. When checking the emergency lanyard I get the same tone when I yank it to kill the engine. I expect that is a safety device so you don't walk off with the key on and drain the battery.

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  • Garyak
    replied
    So, here's the latest. Talked to the service mgr. @ Marita's. He said these units don't flush well in a tank for a couple reasons: 1. The exhaust aerates the water immediately adjacent to the intake enough that water pump is basically in a state of cavitation, and thusly doesn't get a grip on the bubbly water. 2. He said there were also a couple more intakes further up inside the cowling that usually don't get submerged when being run in a tank...rendering them as additional air suckers. I do not see these extra "ports" depicted on my crummy downloaded manual...but that's what the man said. I bought the screw in flushing adapter that fits just above and in front of the anticavitation plate and right on top of the water intake. A forum member on another site emailed me that in order for this screw in flusher to work that I'd have to duct tape the water intake closed so the water would be forced up the tube. He was correct...when not taped, all the water just dumps out the intake. So, with flusher and tape in place, I turned on the water and it starts flowing out of the telltale port in the side of the block. I start the engine and after a few minutes the thermostat opens and the water coming out of the tell tale port warms up indicating that I'm getting circulation through the water jacket. I ran it for about 12 minutes with no temperature change in the warm water. That suggests consistent circulation to me. Then I get an email from another guy that said there is a seal/gasket or some such thing at the base of the water tube and that if it is damaged or missing that none of it will work the way it should. Makes sense to me. All I have really proved at this point is that I can force circulation through the block if I tape the intake shut. As suggested before since the unit is new to me it would be a good move to replace the water pump and while at it I'll check out this water tube business as well.

    Leave a comment:


  • AKExplore
    replied
    it as a kicker/get home motor on a jet boat in the salt
    Garyak,

    When sea water evaporates it leaves salt deposits. You kicker was run in the salt. If it was not flushed with fresh water after running in salt water, then you have salt deposits in the cooling chambers in the motor. These can then travel through the cooling system when water is run through the engine and potential clog small openings such as the water pump indicator hose, end nipple, etc. The Yamaha's that I have run will normally have this problem in either the hose or the nipple at the end of the hose. I have had salt crystals come out of the water pump indicator after I have cleaned out the nipple end with a small plastic tie wrap.

    Is there a high temperature alarm on the kicker? If so and the alarm has not sounded when you have run the motor, then you have an obstruction somewhere in the water pump indicator route in the engine.

    Doug

    Leave a comment:


  • Frostbitten
    replied
    The tell tale is just a plastic fitting. Remove the hose from the fitting, start it up and if it spits water out of the hose, then ream out the fitting and call it fixed.

    Seeing that its a used motor, and there's an indication that the water pump might be faulty, I'd replace it regardless.

    Leave a comment:


  • Tolman24
    replied
    I had the exact same issue by the sound of it. I got zip out of the tell tale. I took it all apart and replaced the water pump even though it was in good shape. Took the tubes apart that i could get to and ran a wire through. I used compressed air as well. Thought I had it cleaned up good and put it together and into the bucket. As it started I got some water out of the tell tale and then nothing, zippo, nada. After banging my head against my boat a few times I thought it through. pump is good. No over heating. tubes are cleaned out so water has to be getting where it needs to go. It must be the tell tale itself. While the motor was running I shot compressed air through the tell tale opening. I could hear it bubbling in the barrel. After I stopped I got about half a stream out. I did it a couple of more times and then had a really powerful stream. I think I had some glacier sand or see weed bits that had worked its way to the tell tale and then dried between uses. I think it had gotten wet so when I hit it with air it went back the way it came and opened up. I will try the compressed air before I try anything else next time because it is quick, easy and cheap. I have an attachment for my hose that has a rubber end that works great for this. I bet you could use one of the compressed air cans that are used for cleaning electronics and do an on site fix as well. I hope this helps.

    Leave a comment:


  • Garyak
    replied
    I appreciate your conviction, but when I ran it yesterday, I removed the tell tale hose at the block for about 2 of the 4 minutes and still got zip water.

    Leave a comment:


  • Sobie2
    replied
    I am telling you that the little plastic exit tube (tell tale opening) on the lower cowl for some odd reason has a tendency to close up, and the solution is to drill it out a little bit. Your impeller is fine and pumps water.

    Sobie2

    Leave a comment:


  • Frostbitten
    replied
    Originally posted by Garyak View Post
    Honestly, that was the 1st thing I considered but I'm not all that sharp of a mechanic...so, no, I didn't open it up. For such a low time unit, I felt it would be doubtful it was the water pump. Doesn't mean that someone didn't run it out of the water and fry the pump, though. That could be it.
    That's exactly what I was thinking. Easy fix.

    Leave a comment:


  • Garyak
    replied
    Honestly, that was the 1st thing I considered but I'm not all that sharp of a mechanic...so, no, I didn't open it up. For such a low time unit, I felt it would be doubtful it was the water pump. Doesn't mean that someone didn't run it out of the water and fry the pump, though. That could be it.

    Leave a comment:


  • Frostbitten
    replied
    Kind of an obvious question, but did you check the water pump?

    Leave a comment:

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