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Went to Colorado River - Things didnt go well.....

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Well, it's not clear what you have done, or what the issues are so it's hard for people to help you..

Did you install new spark plugs and add regular gas to the tank to lean out the premix? You need to take it to the river, leave it on the trailer and start it and rev it up and see if the symptoms have changed and report back to what they are. Make sure you have the boat in deep enough water when testing it.
 
OK.. Sorry for bumping this thread, I was hoping Seadooya or Dr. Honda would comment but they are probably out in the water or way busy right now... Ill call seadooya.. and Ill report back to you guys thanks!
 
Well, it's not clear what you have done, or what the issues are so it's hard for people to help you..

Did you install new spark plugs and add regular gas to the tank to lean out the premix? You need to take it to the river, leave it on the trailer and start it and rev it up and see if the symptoms have changed and report back to what they are. Make sure you have the boat in deep enough water when testing it.

Thank you parrothd, yes I did install new spark plugs and it "sounds" way better, but the boat is in my backyard, and no I haven't added any more fuel to lean out the premix, so I should do that the next time I go out, it looks as if the oil injection system is working, Dr. Honda told me to get a marker and mark the spot where the oil level was when I filled the oil tank, so It is working.

I think you are right, maybe too much oil and it fouled up the plugs, and could have even fouled up the carbs, im gonna go ahead and add more fuel to the gas like you suggested and take it out this weekend. See what happens then, maybe even take a video!
 
If it were mine, I'd check the low speed screws, should be 1.5 turns out, the high should be closed, check all the fuel lines, reserve switch, check all bolts/screws and hoses to make sure everything is on and tight...
 
i dont want to sound like a jerk or sound condescending to you, but i think you need someone more mechanically inclined to help you diagnose. Just from your history of posts here, i think your mechanical inclination is very limited. I dont see you figuring this out, even with our help. It is hard to understand what you have done and what steps are being done to figure out the problem.
 
i dont want to sound like a jerk or sound condescending to you, but i think you need someone more mechanically inclined to help you diagnose. Just from your history of posts here, i think your mechanical inclination is very limited. I dont see you figuring this out, even with our help. It is hard to understand what you have done and what steps are being done to figure out the problem.

Rfoster you are absolutely right, I should change my name to "totalnoob" lol, im not that mechanically inclined so much, im still learning, I didnt even know what the PTO was till recently.

But I am willing to learn.

And I am willing to help out anyone here if I do know a little bit of what their problem is:

So about my boat we know:

1. The boat is not taking on any more water;
2. The compression test stated both cylinders hitting 150;
3. The boat turns on, and it does take off in the water;
4. The boat does go at 10%, 20%, even 25% throttle;
5. But the engine does start to die out at 30% to 40% throttle

There must be an explanation.

(by the way parrothd Im gonna check the low speed settings later on today or tomorrow morning)
 
Did you swap out main jets when you rebuilt the carbs?
Did you fool with the high speed screw?

Sounds like you're leaning out when you open the throtle. Maybe try playing with the high speed screw. I believe that turning it counter clockwise it richens up the stream. Try richening out the carb and see if that helps.
 
Well guys, I just left it alone, and followed these recommendations:

1. Added fuel (added 8 gallons of premium) to lean out the premix.
2. Put new spark plugs in
3. Put new battery in
4. Rode it around for 2 hours at puddingstone lake.

It sounds alot better, I couldnt go over 12 mile per hour because today is an odd day. However, I finally got to fix most major problems, Im not getting any water in the engine bay, is this normal? When I unplug the 2 holes in the rear, no water comes out, after 2 hours of riding around the lake?

Anyways, hopefully I can go next week and try opening it up...
 
Well guys, I just left it alone, and followed these recommendations:

1. Added fuel (added 8 gallons of premium) to lean out the premix.
2. Put new spark plugs in
3. Put new battery in
4. Rode it around for 2 hours at puddingstone lake.

It sounds alot better, I couldnt go over 12 mile per hour because today is an odd day. However, I finally got to fix most major problems, Im not getting any water in the engine bay, is this normal? When I unplug the 2 holes in the rear, no water comes out, after 2 hours of riding around the lake?

Anyways, hopefully I can go next week and try opening it up...

if your bilge is working then engine bay stays dry...... usually :lol:

report back with WOT results.






Wide open throttle (WOT) refers to an internal combustion engine's maximum intake of air and fuel that occurs when the throttle plates inside the carburettor or throttle body are "wide open", providing the least resistance to the incoming air. In the case of an automobile, WOT is when the accelerator is depressed fully, sometimes referred to as "flooring it".
At WOT, manifold vacuum decreases. The higher manifold pressures in turn allow more air molecules to enter the combustion cylinders, and thus additional molecules of fuel are required to balance the combustion reaction. The additional molecules of air and fuel reacting together produce more power. Ideally, to preserve driveability and fuel economy, manifold vacuum should not fall any lower than 1 inHg (3.4 kPa).[citation needed]
 
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Thanks for the clarification, my boat is funny, when I orignally launched it, it felt like it wanted to just take off!! lol, but I couldnt, there were 3 coast police vessels all around and believe me, THEY LOVE GIVING TICKETS, and I believe they are not cheap, like $500 dollars.

When I even tried going 15 miles per hour, I felt they were just looking at me... so I had to relax.., but after I parked my boat, and I restarted, this time it felt it didnt want to take off? it would die on me again at 30 to 40% throttle, so Ill report back at WOT levels..

P.S. THANKS FOR THE EXPLANATION! THAT WAS GREAT!
 
Thanks for the clarification, my boat is funny, when I orignally launched it, it felt like it wanted to just take off!! lol, but I couldnt, there were 3 coast police vessels all around and believe me, THEY LOVE GIVING TICKETS, and I believe they are not cheap, like $500 dollars.

When I even tried going 15 miles per hour, I felt they were just looking at me... so I had to relax.., but after I parked my boat, and I restarted, this time it felt it didnt want to take off? it would die on me again at 30 to 40% throttle, so Ill report back at WOT levels..

P.S. THANKS FOR THE EXPLANATION! THAT WAS GREAT!

Not to continue to harp but did you check the low/high speed needles??
Usually with two strokes when they lean out they have that "wanna take off feeling" that the engines kinda sound like they are rev'ing on their own.
 
I'm not clear if your Speedster was running normal before the water hose came off?

Also, I read that if you are using pre oil mixed fuel in the tank that you still need to ensure some bearings get oil from the oiler.

You should just use the auto oiler and not pre mix unless you know how to modify the oiler so the bearings still get oil but not the fuel system.

Sounds like you are carbon fouled by too much oil or possibly carbs are not set right.



I just got a 1999 Speedster SK(Red) this past weekend from a guy in Palm Springs. Took it out on Lake Elsinore Sunday and all is well.

Top speed by the speedo was 45mph with me and another passenger.
I am thinking I should be getting 50mph on a pair of 720 engines at 7000 rpm? I'll GPS the speed next time.

I also visit Laughlin a few times a year and cruise the CO river on Seadoos and next time the Speedster.

Ray
 
did you check the low/high speed needles??

I did not, since I figured I didnt mess with that last year, why would it be different, no one touched it?

But I did try to go in there, I think however that I have to remove the black plastic casing to get closer to the "low/high speed needles" or there a simpler way, sorry to be such noob at this!
 
I did not, since I figured I didnt mess with that last year, why would it be different, no one touched it?

But I did try to go in there, I think however that I have to remove the black plastic casing to get closer to the "low/high speed needles" or there a simpler way, sorry to be such noob at this!

You had metion the rebuild on the engine but Seadooya had rebuilt the carbs.
It never hurts to double check. I assumed the engine never ran right from the start or before.
 
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Seadooya rebuild the carbs, I got the engine rebuilt at inland jet motorsports...

But your right, if I can rebuild the carbs myself would be great...
 
I did not, since I figured I didnt mess with that last year, why would it be different, no one touched it?

But I did try to go in there, I think however that I have to remove the black plastic casing to get closer to the "low/high speed needles" or there a simpler way, sorry to be such noob at this!

You should be able to put you hand on the carb and feel for the screw with bar through it. LS in towards the front HS in the back.
Its under the end of the spark arrestor black cover.
The HS is around where the black hoses run into carb. the LS is hiding a little more.
 
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Fuel

My bet is that this is a fuel issue. There are 3 things needed for speed. Spark, Air and Fuel. Air is almost free, and a good coil and new plugs give you spark. Fuel is the only thing left.

How clean is your fuel filter ? How old are your fuel lines? When was the last time you cracked open the carb?

Once you remove the plastic flame arrestor piece, you are about 8 bolts away from the carb. If you take your time, you can pull it out to check the built in filter. (Inside the carb- I bet this is dirty and preventing the proper fuel flow - worst case could be your fuel pump not delivering the right amount of fuel, but I bet $$ that it's the carbs.)

I was never able to successfully rebuild my carbs. in a few weeks they would start having issues again, or I would trash them by stripping some of the internal screws. Since Boat stands for Bring Out Another Thousand, and my boat has 1 carb per engine, I buy them new. They cost $199. Best two hundred bucks I ever spent. You can then send the old one out to somebody to rebuild. or try your luck yourself.


I had a miserable year when the local fuel formula was switched to ethanol 10%. All the dirt that was happily logged in my tank came to life, and some of my fuel lines starting oozing crap.

I replaced the stock fuel filter with a spin on filter canister (Actually I was so pissed I over did it and placed 2 filters in series so I know the fuel is clean now) and I replaced some fuel line too. This has helped IMMENSELY. It's amazing the kind of crud that is in the tank. I highly recommend something like this cheap upgrade (26 bucks shipped, per engine http://compare.ebay.com/like/160576478430?var=lv&ltyp=AllFixedPriceItemTypes&var=sbar&_lwgsi=y - No relation to seller !!!! - Buy at your own risk, YMMV, etc)
A BIG, NICE high flow fuel filter will be a huge improvement over the built in filters. (They make them down to 2 micron filtration. I use the 10 micron, which is the more decently price one)

Good Luck however you decide to proceed !
 
Thanks for the responses, I finally got to take my boat out to Puddinstone Lake yesterday, was able to achieve 38 mph. I have videos Ill post up soon.

However, the problem is still there, I have to "baby" the throttle, in other words, i have to go up little by little on the throttle, and it finally planed out (after like 5 to 10 minutes going up slowly). It was great, we rode it like that for like 20 minutes going full blast.

Then we went fishing around the lake. When I went to try to go fast again, it wouldnt. I would baby it again, go up little by little on the throttle till it got back to speed again, but this is getting annoying, Im taking it out again this coming weekend and I want to get to the problem.

I think maybe your right, its fuel related, maybe the carbs, im going to try to get in there like you said, and check the fuel filter.

Thanks..
 
Hi,

Don't know how I missed this one.

Anyway... The hose in red is your main cooling feed. If that came off, and you were running for any length of time... then that was bad. BUT... since you are still showing 150 psi... then I guess you are OK.

Honestly... sounds like the fuel system needs cleaned and checked. The carbs could be plugged up for some reason. (old junk down in the tank) Anytime I work on an old ski... I like to add an inline fuel filter to keep the junk out of the carbs. You could have a leak in the O-ring around the factory fuel bowl. (It will suck air, and go lean) you could have a leak in any of the fuel lines coming up to the carbs. Or... your fuel select valve could be plugged up. (Did you try turning the valve to reserve?)
 
Hi,

Don't know how I missed this one.

Anyway... The hose in red is your main cooling feed. If that came off, and you were running for any length of time... then that was bad. BUT... since you are still showing 150 psi... then I guess you are OK.

Honestly... sounds like the fuel system needs cleaned and checked. The carbs could be plugged up for some reason. (old junk down in the tank) Anytime I work on an old ski... I like to add an inline fuel filter to keep the junk out of the carbs. You could have a leak in the O-ring around the factory fuel bowl. (It will suck air, and go lean) you could have a leak in any of the fuel lines coming up to the carbs. Or... your fuel select valve could be plugged up. (Did you try turning the valve to reserve?)

Thanks Dr. for chiming in, I feel very saddened that that was the coolant plug for the engine, how sad, its terrible that came off, also I am very lucky It only ran like 10 minutes like that (and the water was in the engine bay hopefully keeping it somewhat cool, if that works like that).

"Did you try turning the valve to reserve" No I didn't, , I remember one time you helping me with that last year, I even removed it, and finally got everything back in there (the fuel reserve valve).

Now, of course I want to add an inline fuel filter like you mentioned, I should learn how to do that. Also I want to go through the carbs, Im getting sick and tired of having to wait for the boat to get up to plane. So Im going to have to go in there and try working on the carbs myself, I havent searched, or googled it, if you have a link to show me how to get into the carbs and remove them and clean them, I would really appreciate it.

Finally I think I better start going back to premix again, Im afraid that Im going to run lean again... (even though I did what you told me to do, and mark the oil tank with a marker, and its working, it went down, so the oil pump is working, and it maybe the reason my carbs got fouled up).

Thanks, video coming up..
 
[video=youtube;WLHbfE4K6BY]http://www.youtube.com/watch?v=WLHbfE4K6BY&feature=autoshare[/video]

Heres the video from yesterday 5-22-2011 at Puddingstone Lake. :)
 
Ok- what does Javier have in the bottle?! He was having too much fun! Looks like the boat is moving well though!

- stow your lines and pole. That line is just waiting to grab javier's ankle and have him go overboard. The pole could easily fly up on a wake and do god knows what to someone's eyes.
 
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