96' GSX Fuel Delivery Problem

[kevmanetti]

Update

So i checked all the lines and theyve been clamped. I did the idea and sucked the gas threw the hoses all the way up to the carb and i also checked the ignition coils still made spark plugs spark, it still didnt start. This morning i tried for the heck of it and it started right up but the second i heard it start it died..i left for the day and came back tonight and again no start at all. Im not sure what else to try? Please let me know if you have any ideas thanks in advance!

 

[Dr Honda]

OK... you changed the hoses... you verified that you can suck the fuel up to the carb... and you have spark.

2 things:

1) Make sure the rotary valve is spinning, and in time,
2) Carbs need to come apart, and be cleaned/checked.

 

[kevmanetti]

Where is the rotary valve and I also cleaned the carbs and even rebuilt the mag carb. I placed a gasket I got in between pulse pump and carb it fit there fine but didn't see anyone put it there in any guides.

 

[bigJake]

Oh ok well yeah up In thread a little bit I said I replaced all gray fuel line and rebuilt carbs. So is that what you guys are talking about?

yes Tempo lines are the gray lines you already replaced. Verify fuel selector valve is turned on. if so, remove the fuel selector valve and check it for clogs. clean the fuel filter under the hood if you havent already, put some vasceline on the o-ring and make sure it's not crossthreaded.

edit - oh sorry, I read the first page and thought i was at the end of the thread. I missed you sucked fuel to the carbs so you are getting fuel past the selector valve.

 

[kevmanetti]

Checklist
-Cleaned and rebuilt Carb (placed gasket (came with 4 different ones) in between fuel pump that was made to fit there but didnt see in rebuild guides?)
-Replaced all gray fuel lines and clamped them
-New Spark Plugs (Tested and do spark while in ignition coil)
-Can suck gas through hose that plugs into carb


So for an update its still not running. I can start it by using the primer and pumping gas into the carbs but it will die out a few seconds later. (the only way i can get primer to pump fuel is by taking off the gas hose to the carb and covering the end of it with my finger and then pumping? i dont think this is supposed to be like this?) Back to what i was saying, What I am thinking is the pulse pump is not getting gas to the engine and thats why it wont start or stay started? Is this a possibility and is there any way to test if the pump is bad before i buy a new one? Thanks!
Please ask me any questions if i left something out.

 

[hackete]

What is a tempo line. The only line I didn't change was the line from the pulse pump to (engine)? All other lines I switched. Not counting oil lines either.

Have you changed the pulse line yet? Be sure and use clamps on it. Someone else can tell you the proper way on mine I took the pump off the carb and you can blow and suck on it and watch the side go in and out without getting air in it with light preasure.

I hope BigJake doesn't see this.....

 

[kevmanetti]

Not quite sure what you mean. Blow and suck on the pump where the pulse line would go in? And is the pulse line a standard fuel line? I didn't change that one because it wasn't gray and it looked bigger? If the side goes in and out it is functional? If not it is broken?

 

[bigJake]

Have you changed the pulse line yet? Be sure and use clamps on it. Someone else can tell you the proper way on mine I took the pump off the carb and you can blow and suck on it and watch the side go in and out without getting air in it with light preasure.

I hope BigJake doesn't see this.....

BigJake sees all. Ya know there are some sites where you can post a video of that and certain fellas would pay you to watch it.

 

[hackete]

Not quite sure what you mean. Blow and suck on the pump where the pulse line would go in? And is the pulse line a standard fuel line? I didn't change that one because it wasn't gray and it looked bigger? If the side goes in and out it is functional? If not it is broken?

http://partsfinder.onlinemicrofiche.com/seadooforums/Seadoo_oem/Seadoo_PWC.asp?Type=13&A=37&B=21

No 13-15 are the pump. The tube comming from the housing goes to the engine. The engine gives a pulse (blows then sucks) air into this area. Which makes the diaphram expand and contract. This is the pumping part. If the line going to the pump has a leak then it doesnt work. If you hook a extra piece of line you have to the pump and you blow in it and air leaks this could be a problem also.

Someone else feel free to chime in I don't know if I am explaining this right.

 

[kevmanetti]

I got the waverunner to start and ran it on a garden hose. It will start only when i give it throttle and as soon as i let the throttle go the rpms go way down and the waverunner will turn off. I tightened the idle screw but not sure if this is what i am supposed to do? any other ideaS?

 

[bmocken]

did you check out the carb sticky? It will give you all the settings including the idle speed. If I am not mistaken it should be 3000 rpms on the trailer and 1500 rpms in the water under load. When you took the carbs apart did you also unscrew the low speed or high speed screws? If so they may also need adjusting.

 

[kevmanetti]

did you check out the carb sticky? It will give you all the settings including the idle speed. If I am not mistaken it should be 3000 rpms on the trailer and 1500 rpms in the water under load. When you took the carbs apart did you also unscrew the low speed or high speed screws? If so they may also need adjusting.

Yes ive read to make it near 3000rpm but I am not sure which way to turn the screws to adjust it? I did clean them when i rebuilt carbs. If engine dies and wont idle when i let go of throttle should they be tighter or looser? i think they are fairly tight now thanks

 

[bmocken]

The idle screw if screwed in increases the idle speed.

 

[kevmanetti]

The idle screw if screwed in increases the idle speed.

So from my understanding if it won't idle then I should tighten both screws?

Also a new question. My info center stopped working . So I pushed the buttons on the steering column and the two mode one's seem to trigger the Vts motor. Seemed very odd to me? Thanks

 

[bmocken]

Check out http://www.seadoosource.com/mikunitests.html it will give you all the settings and adjustments.

 

[kevmanetti]

So i have been able to get it to idle to 2800rpms with hose hooked up, havent used on water yet tho. Any ideas on that info center vts motor thing? Thanks for all the help getting this thing running

 

[bigJake]

So from my understanding if it won't idle then I should tighten both screws?

Also a new question. My info center stopped working . So I pushed the buttons on the steering column and the two mode one's seem to trigger the Vts motor. Seemed very odd to me? Thanks

there are 2 buttons on the left side of the steering column - (1) start/stop button (2) VTS control button (actually an UP button and a DOWN button, so really 3 buttons). If you are saying that you are pressing the MODE and SET buttons on the Info Gauge and the VTS is moving then Yes something is wrong. maybe somebody messed with the wiring?

 

[kevmanetti]

The vts switch has no wires to it. And its the mode and set button press the vts.

 

[bigJake]

And its the mode and set button press the vts.

clarity the above?

if there are no wires to the vts switch i would guess either someone disconnected wires and reconnected them wrong or the vts switch went bad so instead of replacing the swith they disconnected the wires from the mode and set and connected the wires from the vts switch. use an ohm meter to verify the vts switch works. if one of the mode and set button causes the vts to go up and the other causes it to go down then yes, the wire are moved from the vts switch.

 

[kevmanetti]

Any idea why when i start it up it revs to 7000rpm for a couple seconds before slowly falling back down to 2800rpm. (this is out of water) Havent tried in water yet until tomorrow.