GTX RFI Still Bogging

[Melo1]

First off just want to say this site is a godsend. I've learned so much about my Seadoo in such a short time. Anyway here is my problem. I have a 2000 GTX RFI and noticed it bogging at WOT (I think this means wide open throttle) at either top speed or out of the hole to the point of it stalling if I kept it open. The maint light would also come on at start up and then disappear. This is what I have done as a result of the great info on this site.

Changed fuel filter at bottom of pump module (helped performance)
Cleaned Raves (one bellow wasn't on properly but is now)
Checked Flame Arrester and cleaned it (wasn't bad)
Siphoned gas and put in fresh tank (gas had no water in it)
Checked oil tank and all is good (no white in oil)
Put injector cleaner in gas. (ran two tanks worth of cleaner)
Changed plugs and gapped them

Once I cleaned the Raves the maint light dissapeared but when it would bog the light would come on breifly and then dissappear again. Kind of stuck now not knowing what to do next. I would rather fix this myself then take it in to the dealer as I'm not a huge fan of getting robbed of my money.

Hope this is enough info but if not please let me know what other info you need and I'll do my best.

Thanks in advance

 

[kustomkarl]

In the info area push the "set" button 5 times to see if it has any trouble codes. Post back with your responses.

Karl

 

[Melo1]

Do you mean the "Set" button or the "Start" button. I've heard of the start button to get into the advanced diagnostic mode but not the "Set" button. What am I to see. Will it be on the LCD or will it be audible. Do you have a listing of the codes it could be? Thanks for the quick response. I'm not at my Seadoo as it is at the cottage but will be there by the weekend to try this. I'm trying to get as many ideas as I can since I don't have any online access there. Thx

 

[kustomkarl]

Just push the "set" button, 5 times. It will then give you a code that will tell where the problem is.

Karl

 

[seadoolover]

Rave valves

When you cleaned your rave valves did you clean all the little black hoses that connect to them as well to make sure there are no blockages in any of these hoses? On my RFI i had a hose blockage which caused HUGE dramas... just a thought.

 

[Nate Surveyor]

I think what he means is to leave the DESS key off the Doo, and press the START button 5 times. When it has no key, it functions differently.

I could be wrong. But I think I remember that from somewhere.

Nate

 

[kustomkarl]

You are correct Nate. It doesn't work different...that is part of how it works.

Karl

 

[Melo1]

Ok I pressed the "Set" button five times and got nothing back, nothing on the LCD or any audible sounds. When I pressed the "Start button 5 times it gave me a short quick beep and then a long one. That was it. I will check the hoses that lead up to the Raves and see if there is any blockage. Any other Ideas. Am I supposed to be on a specific info screen when I hit Set. I tried with the DESS on as well as off. I thought I would have gotten something back for sure when I hit Set. I think I must be doing something wrong.

 

[Melo1]

Ok checked the hoses and they were clear, however when I took it out today I noticed that the LCD screen was not registering my speed but all the other features work. The RPM's would register and It also recorded my top speed but not my current speed. The analog dial for my speed wouldn't register anything either. Wondering if it could be a problem with the MPEM.

 

[seadoolover]

speed sensor

Make sure your speed sensor is moving freely... it looks like a little paddle wheel and is mounted at the rear bottom of your ski.. it could be clogged up.

 

[Melo1]

Ok I found a problem that could be a big one. I noticed that the CSI hose and the hose from the crankcase that goes to the Raves was crossed so I had water coming out of the rave and nothing out the "tell tail" hole. Whoever serviced this before we picked it up this summer realy messed up. I fixed the hoses and pulled the raves again and noticed that one of them had the bellow come unseated. Fixed that and tried to get all the water out of the system. Once that was done I had my brother take it out again with me there (haven't been able to ride lately as a result of an injury) and now at full throttle it runs beautifully and tops out at about 6800RPM but coming out of the hole it still bogs when you open it up all the way. Is there something that could have malfunctioned or been contaminated as a result of the hose crosses. Maybe the solenoid to the Raves? I wished I could have taken it out when we first got it because my brother didn't know about the "tell tail" hole and that it's supposed to flow. I've been trying to fix things based on his feedback so not being at the water to at least see what it does is hard.
As for the paddle on the bottom it is not fouled so I'm still stumped with that one. Thx for all the help so far

Melo

 

[seadoolover]

valve solenoid

That solenoid for the rave is activated by the mpem to switch between crankcase and air pressure to allow the raves to open properly at different rpm's so if water got to the solenoid valve its possible that it is malfunctioning. It usually throws a code in the mpem to show a fault if this valve is not operating correctly but it would'nt hurt to get it tested. Did any water get into your engine.. or just into the rave and the exhaust? Check your plugs for water damage and see. There is also a one way check valve on the crankcase line that allows gas from the crankcase to the raves so wouldn't hurt to check that this is operating properly as well. About the speedo you're saying that it is showing you max speed on the lcd but not the current speed ... and you've got no movement on the analogue speedo gauge at all? The paddle wheel moves freely. I'll check a bit more into this one for you.

 

[Melo1]

Thanks I'll have both the solenoid as well as the check valve checked. There doesn't seem to be any water damage on the plugs. I think it was just coming out the raves as well as into the exhaust. As for the speedo problem, both the analog as well as the lcd don't work. I reset the maximums and I was wrong about it recording the max speed. Nothing regarding current and max speed work. The paddle wheel moves freely and is not fouled. It just went from working to not. Gonna check to see if maybe a fuse is blown or if there is a loose connection. Not sure where the speedo wire goes to (looks like it goes to one of the plugs attached to the electrical box) but I'll trace it back from the rear. Thx for the suggestions.

 

[seadoolover]

speed sensor

Follow the wires from the speed sensor till you reach the plug. If you have a multimeter/ohmmeter you can test the sensor by putting the positive on the red side of the plug and negative on the black side and then get someone to spin the paddle wheel for you... it should start to register continuity on the meter gauge. Does your water temperature work?

 

[Melo1]

Water Temp works and went up and down according to the warm or cold water sprayed on it. I'll run the test it mentions in the manual to check if it has the required 5.5-8.5 Vdc

 

[Melo1]

Got the Water/Temp working. The wire at the back was pinched under the riding plate which was causing a short. All works well now. I'm going to the lake tommorrow to test out the bogging issue with the brother. The solenoid and check valve both work fine so it looks like the water didn't damage them. Is there something else I can check. Thx for all the help so far. It is running better than it has ever has except for that out of the hole WOT.

 

[seadoolover]

Speedo..

So did you get the speedo working again?? As for the bog it would pay to bend over this once and take it in to the shop and get the TPS setting checked with the software only available from the dealer.. checking the timing of the ski within the different rev ranges.... you can't do this without the software unfortunately BUT at least you can eliminate that as being a problem. There are soooo many things to check for bogging on the RFI models.. anywhere from hose blockages to RAVES and fuel issues due to pressures and injectors... i spent 6 months and eliminated every possiblity with mine ..or so i thought... in the end i had to take it to another dealer ONE THOUSAND MILES AWAY. He had a test tank and picked up the problem whilst hooked up to the software with the ski in the test tank under load... it was a simple hose blockage to the RAVE. Wasn't i p@#*!@ off. Let's hope your problem isn't as complex. Together i'm sure we can work it out.

 

[Melo1]

I did get the speed/temp working. thanks for asking. I think I may have figured out the low end bog issue. I messed around with the screw setting on the raves. I originally had it all the way in but wasn't getting good performance. Once I backed them out and put them flush with the cap it worked much better but still had the low end bog. Then I notice one of the bellows was not compressing in and out as well as the other.(the one that came off its seal when the hose from the water line was hooked to it) So I decided to mess with the screw setting a little bit on that one and it seems to have fixed the problem. I think I need a new set of compression springs for it as well as the larger spring that holds the bellow at the top.(seems a little loose). I want to test it out on the water once more to make sure it wasn't a fluke it was coming out of the hole so well. I'll keep you posted but thanks for all the help so far.

Cheers

 

[seadoolover]

Cool.. RAVES are of the utmost importance to your rfi's performance and it sounds like you will need to rebuild them shortly.. its not hard and you'll get all the help you need from this site. Let us know if it was a fluke or not:redface::rofl: