1995 Seadoo xp is bogging down !HELP!

[persynt]

I seem to have the same problems with my seadoo. For about two years now ive been having problems with my seadoo, when i have it in the water with full throttle it is bogging down. It seems like when i accelerate im pulling a heavy load. When its out of the water with the hose connected it runs fine. I did not experience any problems with it shutting down. Before i take it out to the lake again i took off the air filter and its casing. I sprayed carb cleaner in the carb, i checked the box next to the battery ( i guess its the electrical box) it seemed dry. I did experience a lot of water in the hull too so thats why i was checking if it was dry or not. If there is any advice please let me know, or if you know whats causing it. Also my brother took off the air filter and between the casing and the carb, are there gaskets in between them two????
Thanks

 

[salmonkiller01]

Is it revving up, but you don't gain any speed? The water may be from a leaking carbon ring, it is right behind the engine on the drive shaft(black ring on the drive shaft. Do you have the gray fuel lines still? If you do they should be replaced with new fuel lines you can get at auto stores think you need 25 feet of 1/4 inch and 15 hose clamps. The grey fuel lines breakdown from the inside and clog you internal filters in your carbs. Then you have to take your carbs apart and clean the filters. Down load a manual and it will walk you thru the steps.Let us know how you make out.

 

[persynt]

Gaskets?

I def will try that. Also do you know if there are gaskets between the air filter casing and the top of the carbs? My dad said he saw and scraped off some gasket residue off the air filter casing. I called a seadoo dealer and they told me there is and then the parts department told me they didn't, so i dont know.

And to answer your question. Some forums i read was people would start off fine then go down to idle speed. Same thing it use to do that then slow down, then speed up then slow down. When you open the throttle it doesn rev up and sound loud it just seems like it revs half way but my tail is down in the water like i have a heavy load, and will make a humming sound kind of.
Thanks

 

[salmonkiller01]

The parts manual does not show a gasket, and my 97 gtx doesn't have one either. Definetly sounds like your carb filters are plugged, very common problem. If your carefull taking your carbs apart you can re-use the gaskets but if you want to rebuild the carbs get genuine mukini parts, not aftermarket. You will also want to take the fuel selector apart and clean it or atleast blow some air thru it to get any crud out.

 

[persynt]

Well I did what you told me too. I went to the auto store and got new gas lines. I took both the carbs off and took out the little filters on the side they both were pure black and gross. I cleaned both of them really good with carb cleaner. Looked over the carbs and cleaned them a little bit. With the new gas lines and clean filters I started it and to me I've def noticed a difference. The true test would have to be in the water.
and whats the fuel selector?

 

[custompartsguy]

the fuel selector I think he is reffering to is the off/on/res selector, very common to corrode up and get gunk in them.

 

[stever]

Same problem

I bought a a Seadoo that had set up a while. Got it running but it also bogged down under full throttle. I pulled the tank cleaned it and rebuilt the carb. Now I am having a hard time getting a gas flow back the the carb. I used compressed air in the front vent valve to try and get it flowing. I have also blown air through the lines while disconnected at both ends and got an air flow. I marked the tank lines before I removed them from the tank.
Tomorrow I may try rigging another gas supply to the carb and see if the motor will keep running. It will crank but not keep running. I get 130 psi on both cylinders with a compression test. This is a 1995 GTS.
Is this always a problem once you replace fuel components?
Thanks

 

[timmyboy76]

I bought a a Seadoo that had set up a while. Got it running but it also bogged down under full throttle. I pulled the tank cleaned it and rebuilt the carb. Now I am having a hard time getting a gas flow back the the carb. I used compressed air in the front vent valve to try and get it flowing. I have also blown air through the lines while disconnected at both ends and got an air flow. I marked the tank lines before I removed them from the tank.
Tomorrow I may try rigging another gas supply to the carb and see if the motor will keep running. It will crank but not keep running. I get 130 psi on both cylinders with a compression test. This is a 1995 GTS.
Is this always a problem once you replace fuel components?
Thanks

Nope...take a gander at your lines, make sure they're hooked up to the right fittings and on tank. Also make sure, the battery is charged/good. Had same prob w/ my boat, until I jumped it, and wham, motor turned over harder, causing it to pull the gas..

 

[custompartsguy]

after you have checked that the lines/hoses are correctly hooked up, spray a shot of starting fluid into the carbs this will start the ski and help prime the system.

 

[stever]

GTS problems still

I replaced gas tank, rebuilt carb, replaced gas lines, took fuel switch off and cleaned out the green goo. New battery fully charged, 10 gallon of gas in tank, new plugs. After all this it will only run a short time mostly on fuel poured in carb. I numbered all gas lines and marked where they go before I removed them.
I pressurized gas tank with air but Im still not getting a good flow of fuel to carb. It does get some.

Like I said before I done all this it did run but bogged under full throttle and more it run seems the worse it got. That's why I started the repair.

Thanks for all the help and info from all here :banghead:

 

[custompartsguy]

while it is running or you just shut it off after running it pull the fuel filler gas cap and see if it sucks in air.

 

[custompartsguy]

also did you rebuild the carb or just clean it? how about the fuel pump/accelerator pump?

 

[stever]

GTS Carb adjustment

You hit it. I had one of the gas lines crossed. Got it cranked but now need to adjust the carb. Is there a procedure for adjusting the low side and high side?
How many turns on the adjust ment should I start with?
Thanks for the help.

 

[custompartsguy]

start with 1 1/2 ls +/- 1/4 turn and 1/4 hs.

 

[timmyboy76]

You hit it. I had one of the gas lines crossed. Got it cranked but now need to adjust the carb. Is there a procedure for adjusting the low side and high side?
How many turns on the adjust ment should I start with?
Thanks for the help.

low=1.25, high=0

 

[custompartsguy]

according to the manual


start with 1 1/2 ls +/- 1/4 turn and 1/4 hs.

But maybe trial and error has brought it to Timmy's specs, try them both

 

[stever]

Idle adjust

I got it running but cain't get the idle down. I set screws like directed. Got idle screw all the way out. Seems I have to screw low speed screw out to make it idle lower. Further out than 1. 5 turns.

Does this means it has an air leak in the fuel lines or somewhere? Should I just set it on fire and get it over with? :rofl:

 

[custompartsguy]

you are not supposed to set your idle speed with the lsa you only use the idle speed screw to do that, it sounds like you may have a air leak, spray around your carbs and intakes with some carb clean or wd40 and listen for a change in rpm's once and if the rpm's change you have found your vacumm leak.

 

[timmyboy76]

pull the airbox, the nmove throttle, see if the butterflies are stick'n, and/or check your throttle cable..

 

[custompartsguy]

I got it running but cain't get the idle down. I set screws like directed. Got idle screw all the way out. Seems I have to screw low speed screw out to make it idle lower. Further out than 1. 5 turns.

Does this means it has an air leak in the fuel lines or somewhere? Should I just set it on fire and get it over with? :rofl:

I didn't even notice it untill now, you sort of hi-jacked this thread....please create your own thread so we do not get off topic of the problem they have listed as well....thanks

 

[katierage]

persynt - find the solution?

persynt, did you ever find the solution to the "bogged down" problem? I am having the exact same problem with my '95! When riding solo it works almost okay, however with more than one person riding, it will get to the point where the engine "revs" but will not speed up, and it will tip so that the front end is popped way in the air. It sounded pretty similar to your problem.

Please get back to me if you did or did not end up finding what the problem was, it would save me lots of time and money. iggy:

Thank you!

 

[RFoster130]

Katie, if the engine is actually revving, its not an engine problem. If there is a problem with the fuel system, it willl stutter or run like crap. If yours really revs fine and the engine isnt running rough, it is not a engine problem, but more than likely a pump problem. If you just lose thrust, I would look at pump issues. More than likely a wear rin problem. Very common problem with all seadoos. Just a part that wears out. Search for wear ring and you will see tons of info.

 

[katierage]

I think you're right about the fuel system because yes, the engine runs fine. Although it may be the pump because while pulling the throttle steadily the fuel that is being pumped into the engine seems to "fluctuate." For example, sometimes even if I'm holding the throttle down steadily at a certain level the speed will still slow then speed up then slow again. I also noticed the gas runs out extremely fast (and with a broken fuel gauge it's even more of a problem.) If there is something wrong with the fuel system, how would I go about fixing it, or even become sure that that's the problem? Also, how can I check if it's a pump problem? Does the wear ring have anything to do with the fuel or pump systems? I thought it was for the propeller...

Thanks for all the info.

 

[ondmove]

did you have to replace gaskets where the carbs mount to the engine? I don't want to take these off and then realize i have to order more parts.

 

[deepdiver]

Katie, the pump referred to is the jet pump which you called the propeller. The impeller spins inside a wear ring which wears out. The space between the impeller tips and wear ring should be very tight(.04") to get full power. Either the impeller tips get worn and the ring gets worn so you have to inspect it, maybe from underneath thru the intake after removing the screen.