I have a 95 Sportster that has given me nothing but problems. When I first bought it used from a private individual, nothing seemed to run right on it so I brought it to a Seadoo authorized mechanic at a local marine store and they went through everything and ended up having to rebuild the engine. Didn't have any more problems with it after that, but just this last weekend - after using it for two months with no problems - my son filled it with gas, forgot to replace the gas cap and tried to start it. Obviously this didn't work but I eventually was able to get it started. Ever since then it either hasn't started or after it's running it will die on it's own and then won't start again for a few minutes. So I brought it back to the same place that rebuilt the engine the first time and now they're telling me that the engine was overheating and needs to be rebuilt again! I always make sure that it has oil, clean fuel and as far as I know, have never sucked anything up into it. I know nothing about these types of boats other than basic mechanical stuff. It is always winterized professionally, never started dry and driven responsibly. I don't understand how this could have happened after not quite two years since the first rebuild. Any suggestions??? Could it be something else??? Sorry for the long post and thanks for any help.
-
This site contains eBay affiliate links for which Sea-Doo Forum may be compensated.
Really need some help with 95 Sportster!
- Thread starter sgmonge
- Start date
- Status
How long was the gas cap off? If you got dirt or other junk into the fuel tank/system, you could have easily cooked the engine. 2 Stroke engines dont have oil in them to keep the parts lubricated and cooled. The oil is injected into the fuel stream. Therefore, if there is a restriction in the fuel flow, there is less oil getting used, which will overheat metal parts.
The seadoo mechanic ran a compression test and said that one cylinder was down 30 psi from what it should be but the other one was fine. That's when they asked permission to tear it apart and then told us it had to be rebuilt, but I don't know if it's just one cylinder or both that they think need to be rebuilt. Still waiting on a call back from them as to what they think happened and exactly what needs to be repaired. And I haven't tried new spark plugs and don't know if the mechanic has.
"Beyond compression test"...so you're saying I should do the test myself to confirm or negate their results??
I've also been reading through several of the postings on here and there's something else that I found out that I didn't even know was a problem. When I'd putt around on the boat for awhile (over 30 minutes or longer) and then accelerate, the motor would rev up but I wouldn't go any faster. I would have to back up for a little ways and then it would go no problem.
I didn't realize that it wasn't supposed to do this. I just figured it didn't like to putt and would run better going fast all the time. (Yeah, I know....I feel stupid now)
In reading through the postings it sounds like it's been cavitating for a long time - even before the engine was rebuilt the first time and ever since then. It also sounds like this cavitating - from either a worn water pump impeller, bad wear ring, bad neoprene (carbon?) seal, or some other leak around the pump - could be causing the issues with not-starting/stalling and overheating. I don't even know if it has an overheating alarm on it as I don't recall a light on the dash and have never heard any kind of alarm. (Yeah, I know I should probably know this)
I'm going to have to go over the invoice I got the first time it was "rebuilt" and see exactly what they checked/replaced and what they didn't. If they did replace all or any of the rings or seals, could they have gone bad within two years???
I've also been reading through several of the postings on here and there's something else that I found out that I didn't even know was a problem. When I'd putt around on the boat for awhile (over 30 minutes or longer) and then accelerate, the motor would rev up but I wouldn't go any faster. I would have to back up for a little ways and then it would go no problem.
I didn't realize that it wasn't supposed to do this. I just figured it didn't like to putt and would run better going fast all the time. (Yeah, I know....I feel stupid now)
In reading through the postings it sounds like it's been cavitating for a long time - even before the engine was rebuilt the first time and ever since then. It also sounds like this cavitating - from either a worn water pump impeller, bad wear ring, bad neoprene (carbon?) seal, or some other leak around the pump - could be causing the issues with not-starting/stalling and overheating. I don't even know if it has an overheating alarm on it as I don't recall a light on the dash and have never heard any kind of alarm. (Yeah, I know I should probably know this)
I'm going to have to go over the invoice I got the first time it was "rebuilt" and see exactly what they checked/replaced and what they didn't. If they did replace all or any of the rings or seals, could they have gone bad within two years???
Last edited by a moderator:
I did find an awesome website with parts lists and blown-out diagrams of every system on the 95 Sportster that I have....they also have pretty much every model year Seadoo jet boat going back to 1993!
http://fiche.worldofpowersports.com/wps/partsfinder.htm
http://fiche.worldofpowersports.com/wps/partsfinder.htm
#5
http://partsfinder.onlinemicrofiche.com/seadooforums/Seadoo_oem/Seadoo_JB.asp?Type=13&A=5&B=13
For what its worth, you got "leverage" on your side, since they neglected to change it out, which WILL constitute cavitation.
http://partsfinder.onlinemicrofiche.com/seadooforums/Seadoo_oem/Seadoo_JB.asp?Type=13&A=5&B=13
For what its worth, you got "leverage" on your side, since they neglected to change it out, which WILL constitute cavitation.
- Status
