Im in process of buying this boat and put it on water yesterday. engines fired right up but when i moderatly throttled up and boat all but planed out it shut off. it fired right back off but under load both engines stumbed etc. they seemed ok in lower rpms. He said the fuel was still from last session and with my past 2 stroke exp. im thinking fresh fuel and tune up might resolve it but never had any seadoo exp. so im i wishing for the stars on this or ???? I have him down to 4500 on the boat and it only shows normal wear. appears to have lead a fairly sheltered life .I generally dont like to buy something unless i can own it right enough to be able to get back out of it fairly easy with out losses . Im i even in the ball park here?? thanks for any advise.. Mike
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need some prepurchase advice 99 seadoo speedster
- Thread starter irocit69
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Hi and welcome to the SeaDoo forum,
Check the engine compartment and see the the boat still has the grey tempo fuel lines. If it does they will need to be replaced, along with cleaning or replacing the fuel control valve, water separator/fuel filter and the carb. filters, maybe also a carburetor rebuild. You might want to factor the cost of doing this or having it done into your offer.
Here's a thread on the subject:
http://www.seadooforum.com/showthre...el-Delivery-Problems-low-revs-bogging-surging
There's really not much to do for a tune up, just replace the spark plugs.
Lou
Check the engine compartment and see the the boat still has the grey tempo fuel lines. If it does they will need to be replaced, along with cleaning or replacing the fuel control valve, water separator/fuel filter and the carb. filters, maybe also a carburetor rebuild. You might want to factor the cost of doing this or having it done into your offer.
Here's a thread on the subject:
http://www.seadooforum.com/showthre...el-Delivery-Problems-low-revs-bogging-surging
There's really not much to do for a tune up, just replace the spark plugs.
Lou
Lou, Thanks for the info and supporting my theory. Would you have any idea ruffly parts cost etc to do these task? I will down load the manual and do work myself. What type of fuel line u suggest If replace.Im sure any other questions I can get answered via manual. Thanks again!
Hi and welcome,
First check to see if indeed you have the gray fuel lines as Lou said. Didn't they stop using those in 98 or so????
If you have a 787 motor then you need (appox. for each motor) about 20 ft of 1/4 inch black auto hose and about 24 stainless steel clamp some people prefer to use high quality zip ties instead of clamps. Do one at a time. I don't think you have a fuel selector on a boat. I would replace the fuel filter too, who knows how old it may be. Dual motors will require more.
This might help you too. http://epc.brp.com/Index.aspx?lang=E&s1=360716c8-6d6c-475d-865f-e53cee94962d
First check to see if indeed you have the gray fuel lines as Lou said. Didn't they stop using those in 98 or so????
If you have a 787 motor then you need (appox. for each motor) about 20 ft of 1/4 inch black auto hose and about 24 stainless steel clamp some people prefer to use high quality zip ties instead of clamps. Do one at a time. I don't think you have a fuel selector on a boat. I would replace the fuel filter too, who knows how old it may be. Dual motors will require more.
This might help you too. http://epc.brp.com/Index.aspx?lang=E&s1=360716c8-6d6c-475d-865f-e53cee94962d
I could be wrong but I believe SeaDoo used grey tempo fuel lines on carbed engines until almost the end of 2-strokes. I know they used black marine grade lines on DI and FI models. I know I helped a buddy change lines on a 2004 GTI which had grey lines.
I believe your boat has two 717 engines with dual carbs. is that correct?
I'm thinking it's going to cost, if you do it yourself for fuel line, cable ties, etc. about $100-125. If you need to overhaul the carbs. about $40.00 for a Mikuni rebuild kit per carb., you have 4. Plus carb. cleaner etc. So probably about $300.00 total, maybe a little less.
If I were buying the boat I would offer at least $500.00 less because it would cost at least that much do have a shop do the work.
Lou
I believe your boat has two 717 engines with dual carbs. is that correct?
I'm thinking it's going to cost, if you do it yourself for fuel line, cable ties, etc. about $100-125. If you need to overhaul the carbs. about $40.00 for a Mikuni rebuild kit per carb., you have 4. Plus carb. cleaner etc. So probably about $300.00 total, maybe a little less.
If I were buying the boat I would offer at least $500.00 less because it would cost at least that much do have a shop do the work.
Lou
Welcome!!!! You found the right place to get you all the help you need.
First of all, does it have the 85HP motors or the 110's? Im guessing the 110's since you said it was a speedster. They made the boat with the 85Hp motors also but it was called the Speedster SK. In good shape that boat is worth 6000 to 6500. So you are in the right ball park. With it running rough, I would try to talk him down more. It is probably gonna be an easy fix though.
I would start with simple stuff. Get out as much old gas as you can, then throw in some new plugs and give it a spin. A bad plug can really cause issues and is an easy fix. Do you notice any difference in the 2 engines? If they both run rough, then I would suspect a fuel delivery issue like a fuel filter or gummed up lines. There are no valves to clean. If it is specific to 1 engine, then I would think more along the lines of a carb issue. If it is the 110 HP motors like i think, you need to clean the RAVE vales also. That info is on here.
Also, see what oil the owner has used. Make sure the oil injection system is still hooked up and the oil tank is full and it all looks good with no leaks. Follow the oil lines and make sure they aren't cracked anywhere. I would try to figure out the problem before you buy it, or talk the owner down more. I doubt it is a major issue, but I would use the fact that is isn't running correctly to your advantage.
One last thing, you said it just shut off......both engines? If so, that is kind of odd and would lead me to suspect an issue with the DESS post or lanyard. Did you get any alarm or beep noise when that happened?
First of all, does it have the 85HP motors or the 110's? Im guessing the 110's since you said it was a speedster. They made the boat with the 85Hp motors also but it was called the Speedster SK. In good shape that boat is worth 6000 to 6500. So you are in the right ball park. With it running rough, I would try to talk him down more. It is probably gonna be an easy fix though.
I would start with simple stuff. Get out as much old gas as you can, then throw in some new plugs and give it a spin. A bad plug can really cause issues and is an easy fix. Do you notice any difference in the 2 engines? If they both run rough, then I would suspect a fuel delivery issue like a fuel filter or gummed up lines. There are no valves to clean. If it is specific to 1 engine, then I would think more along the lines of a carb issue. If it is the 110 HP motors like i think, you need to clean the RAVE vales also. That info is on here.
Also, see what oil the owner has used. Make sure the oil injection system is still hooked up and the oil tank is full and it all looks good with no leaks. Follow the oil lines and make sure they aren't cracked anywhere. I would try to figure out the problem before you buy it, or talk the owner down more. I doubt it is a major issue, but I would use the fact that is isn't running correctly to your advantage.
One last thing, you said it just shut off......both engines? If so, that is kind of odd and would lead me to suspect an issue with the DESS post or lanyard. Did you get any alarm or beep noise when that happened?
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yep you right on the engines im sure. I remember seeing the grey lines almost a plastic type material so if the guy is sincere enough about selling it I will have a good start on cure. if not i guess i can play with the money anywhere instead of just on the water even though i have already worked him out of 1k from the start already.never said if thought i was buying it right between between 4 and 4500? thanks guys
Darn it - That's supposed to be my line.... I never should have deleted that as my signature line.. (so I wouldn't forget it)
OK, don't forget to post pics too.... :cheers:
Yes your point couldnt have been more right on. Yes I have already ran the test before going thru the trouble of putting in water and even before knowing ifn the issue . all cylinders was between 145 and 150. I raced motocross in my youth so pretty familier with 2 stroke just havent seadoo or marine. well by this time tomorow i will ether be a proud owner and bug the crap out of u guys or will paitently what for another one affordable enough for me. If truth be known I have desired one since they first come out and i was to young for a toy like that.LOL To everyone you all have been a great help and hopefully before long i will be alot wiser and pass it on to another seadoo greenhorn.LOL:cheers:
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Well this is what happened. when i took off i gently rolled the power on and i didnt really see the tacks prior to loss but sounded like around 4 to 5 k both just went to crapping and died. keeping in mindwas pulling great till then.dont recall the beeping untill i tried to restart and forgot to take out of gear. It immediatly refired and both sounded ok at low rpm but yes both engines were chocking and puking in harmony when heading back to land I could pump the throttles couple times and would have short burst of life or under 4k rpm would run ok. The guy originally was asking 5500 and already have beat him down to 4500 by netpicking a few visual defects . one of the visor things needs fixed one of the plastic fenders on trailor needs replaced etc etc. so i dont know how much play is left in him but will know tomorow. I do know it not a need of money since the other boat there was prob more then i would invest in a house .lol. but I do feel alot better with having some worth info again thanks to all. im going to bed a wiser man then when woke up lol
If you take it out again, check the tachs at full throttle, should be 7200 i think. I would start with the stuff we all mentioned and clean the RAVE valves. Even at 4500, thats a decent price.
Hey all you guys who have been Godsents getting me thru this process!! Just wanted to let you all know after a set back and and one forward I got to bring her home last night took a pic but was pretty dark so will get some after work. well the set is that it is a SK. I guess I was so tuned into mechanical or haul damage etc I forgot to give the decals any diagnostics LOL. Does this mainly mean the smaller engine package? Any pros like after a wkend of fuel burning i might be able to afford lunches at wk next wk now????? The pros was that only a cpl of the short hoses at the carbs was only grey fuel lines to be found . all the rest appeared new rubber and even went to trouble of using fancy crimp rings. and the only other draw back i guess there is is that now you guys are stuck with me.LMAO.Thanks for making me sound prof, at the bartering table. Mike.
I got new plugs and the in line fuel filters but I thought someone said was some internal filter at carbs? Ok these Rave valves are they anything simular t reed valves in like a 2 stroke motorcycle?
BMANN06
Well-Known Member
The SK is still plenty fast so don't worry about that. With the 85HPx2 I'm not sure that your max RPM is still 7200. But you are a premium member ... so download the 1999 Speedster manual. Just becareful when referencing the manual as it covers both boats. The manual is laid out nicely though so its easy to distinguish between the models 5678 is 787 and 5677/5681 is the SK model (your model). These boats rock!!
Edit: just checked for you ... you should be seeing 7000RPM at full throttle.
Edit: just checked for you ... you should be seeing 7000RPM at full throttle.
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Yeah if you havent been in one with the 110's i dont think you will have many complaints. There may be some slight difference, but not much. You will at least save fuel..lol. No worry about the Raves either, the 717 doesnt have them. The good news is that the engines are very reliable. Thats a great first boat and if you got it under 4500, thats a decent deal. Swap out the plugs and fuel filter and run it again, did you verify the oil injection system is all good?
ok.I bet you guys thought I took my info and ran with it.truth is not much new been workin so much. I did the plugs filter , fresh fuel and got to water just pre dark so only tested for few minutes but the were flawless ones just as predicted the ran 7000 full throttle. close to 50 mph. man what A fun ride its gonna be. I love the handeling characteristics .Well except tryng to load it since it was pretty windy it only took a couple of aborted approaches to land it. I believe its the start of a great relationship.LOL. Is there any preventive maintaince that I wouldnt be awaire of ? Im a little anal about that kinda stuff. any suggestions on products for seats or polishes to help make her feel young again?" LOl have takin a few pics . just havent down loaded them yet. OK I cant refrain.... Is there any mods etc to give them lil more performance. Nothing personal .if I road rockets on third trip out i would be wanting to squeeze another drop or so out of it .LMAO. Off to work i need more fuel more fuel. haaa
As far as maintenance, check the oil injection system like i mentioned before. That is the life if these engines, any problems with it and you will toast an engine. Change the inline oil filters. Also change the jet pump oil. All the info you need is on this site. As far as putting it on the trailer and docking, lots of low speed practice and you will get it in no time. Just use the FNR lever and not the throttle. Just push it back and forth....you will get the hang of it, we have all been there.
To polish the boat, I use 3M marine rubbing compound. Rub it out and then wax it good. For the seats, the best thing is 303 aerospace protectant. I use it and my seats still look brand new.
Performance mods.....not much to do really. Different impellers will help slightly, but not a huge difference. Cosmetic mods...there are plenty. I can give ya lots of ideas.
To polish the boat, I use 3M marine rubbing compound. Rub it out and then wax it good. For the seats, the best thing is 303 aerospace protectant. I use it and my seats still look brand new.
Performance mods.....not much to do really. Different impellers will help slightly, but not a huge difference. Cosmetic mods...there are plenty. I can give ya lots of ideas.
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Only real mod is the impellers, not much is out to improve performace of the boat. My Sportster 1800 w/dual 717's I just bought 2 Stak-Trak swirl impellers to help chop up the weeds, cut down on cavitation, and help with hole shot. This design takes few MPH on the topend, but I would rather have that than plane slower and be able to pull tubes better. Speed cost more and usually you get more grief messing with the engines. Reliability is the key to having fun, who wants to tune the boat all weekend long?
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