All of a sudden my 96 seadoo gtx will not get past 30 mph, it just kinda loses power, but will rev fine out of water. In poking around I noticed that one of the springs in the raves is not there. Could that be the cause? Also, how can I get another, also should I not ride it until I get it?
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Missing rave valve spring
- Thread starter Joey2509
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Sportster-2001-951C-Stock
Well-Known Member
I assume you're referencing the spring that hold the RAVE valve in the closed position. If missing, this won't keep the RAVE from opening but the timing of opening will be incorrect thus you may experience issues attempting to accelerate.
Also, the RAVE will not be fully closed at low speeds, your idle smoothness and engine starting will be adversely effected.
The problem you describe is consistent with carburetor and fuel supply issues though, which can be more serious to the point of causing engine damage.
So I will agree you shouldn't ride the ski until you have the RAVE issues squared and confirm there aren't other problems with the fuel system, such as a clogged carburetor that needs to be replaced or rebuilt to avoid causing engine damage that might occur as a result.
Also, the RAVE will not be fully closed at low speeds, your idle smoothness and engine starting will be adversely effected.
The problem you describe is consistent with carburetor and fuel supply issues though, which can be more serious to the point of causing engine damage.
So I will agree you shouldn't ride the ski until you have the RAVE issues squared and confirm there aren't other problems with the fuel system, such as a clogged carburetor that needs to be replaced or rebuilt to avoid causing engine damage that might occur as a result.
ORION '95 Speedster
Active Member
Running lean will make the motor run really good or really bad, before it overheats due to the lean condition. If fuel is the issue, you MIGHT be able to diagnose that by putting the boat in the water, and giving the motor full throttle and then slowly applying the choke. The choke will rich'n the mixture, resulting in: Increase RPM - which indicates a carburetor lean condition, or it will lower the RPM indicating a stoich carburetor condition. Running a two stoke motor lean for a short time wont hurt it. Running a 4 stroke motor with no oil will not hurt it. Keep in mind, the key words here are: A SHORT TIME. Not 20 minutes, not 10 minutes, not 5 minutes. Your heart can stop for A SHORT TIME without killing you, but not for 20 minutes, 10 minutes or 5 minutes. Your heart is the same as lubrication on an engine.
ORION '95 Speedster
Active Member
Did you check Amazon.com and eBay?
Seems I need to buy complete kit. You know at some very brief period the ski ran good for a couple days in the past so the spring being culprit is unlikely. Does that make sense?
Sportster-2001-951C-Stock
Well-Known Member
Check under the engine, I've struck gold in many greasy bilges. An air compressor hose can help if you have air.
As for the running problem, I suspect you have some kind of duel system issue. A very common place to look is the fuel/water seperator cup, often the o-ring gakset is misinstalled or the cup might be lose/cracked. I've had lots of leaks in this location to the point I avoid taking it apart, lol. If there's a leak here the fuel pump will be sucking air.
Why not, since you've already paid someone to service the carburetors, don't you take it back and say "Hey I paid so, WUWT?"
As for the running problem, I suspect you have some kind of duel system issue. A very common place to look is the fuel/water seperator cup, often the o-ring gakset is misinstalled or the cup might be lose/cracked. I've had lots of leaks in this location to the point I avoid taking it apart, lol. If there's a leak here the fuel pump will be sucking air.
Why not, since you've already paid someone to service the carburetors, don't you take it back and say "Hey I paid so, WUWT?"
Sportster-2001-951C-Stock
Well-Known Member
Oh, and if this is a 787 I seem to recall someone wasn'r happy with the RAVE diaphragms (SBT aftermarket I think) they received in their kit, they were too thick and the rubber was stiff so the valve didn't work correctly. Just something to look for....
snikwad003
Well-Known Member
I think [MENTION=57920]racerxxx[/MENTION] posted something about red bellows good green bad, could be wrong
Reds are softer, green are the current. But.....do not use the aftermarket green ones. They're are several different aftermarket green ones. The sbt look the closest to the item ones but I think jammin had issues with those too. So I would rule out all if the aftermarket.
I know how that's going to go, they'll say it's some other problem and I'll pay another $500 bucks. I got another spring and took it out and same issue, gets to 30 mph and like 5500 rpm and just won't go any faster. Actually runs pretty well until that point. I did compression and have 150 and 157.
snikwad003
Well-Known Member
Did you take it to the shop and say " hey clean my carbs" or did you take it to the shop and say what its doing and they said you need to clean your carbs?
snikwad003
Well-Known Member
If you took it for a starting issue then you cant say they misdiagnosed it and take it back and gripe about your current issue since they are different problems. Did you pay $500 for a carb cleaning? Did they rebuild or just clean?
Carb cleaning and they found a hole in the exuasted that they had to weld.
snikwad003
Well-Known Member
Im with sportster, sounds like fuel system. I would start at your fuel pick up and work your way to the carbs checking everything for loose clamps clogs in the lines etc. You can use a section of 1/4" hose and bypass fuel filter and fuel selector and see what you get. I wouldnt rule out rectifier, or needing to trim plug wires. To test rectifier unplug red wire comming from it and test ride, keep in mind you are not charging battery with red wire disconnected from rectifier.
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