CReynoldsMIZ
Well-Known Member
I know I've blasted 2 full cans of carb cleaner through them. By could it be possible that a low speed circuit is plugged somewhere and out of the water it is basically running on one cylinder?
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99 SPX Voltage Issues?
- Thread starter CReynoldsMIZ
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CReynoldsMIZ
Well-Known Member
I'm not saying the motor is so called roaches, but more or less tired. The problem is idk how the motor was put together. Is there a possibility that the wrong thickness of base gasket have any effect on this?
Bnelson
New Member
I hear what your saying, I'm not sure how the motor was reassembled either, but would think with good compression your fault lies elsewhere.... As far as I've ever known all the base gasket would affect would either raise/lower your comp #s.... Guess your not interested in trying another set of carbs or RV cover?
CReynoldsMIZ
Well-Known Member
Honestly I just don't have time to drive all the way down there before I have to leave on Thursday. And it's not really on the way I take to the lake either. What type of carbs do you have?
Bnelson
New Member
Just off that parts XP I have, non accelerator pump so figured that would eliminate one issue... Wasn't sure if you got off on 65 or if you took 50... Figured you could grab them on your way and swap them at the lake... Doesn't matter, just trying to do what I could to help so you had a ski for the 4th...
Maybe it's just me, but the carbs. with the accel. pumps are a complete PIA. I had a set on my 96GSX, I never could get them to behave, so I just rebuilt the old stock set (no accel. pump), put them back on the ski, and no problems since.
BTW, if it was my ski I would change the voltage reg./rectifier, you're on borrowed time anyway.
Lou
BTW, if it was my ski I would change the voltage reg./rectifier, you're on borrowed time anyway.
Lou
CReynoldsMIZ
Well-Known Member
Do you have any idea if the set of carbs you have are good? Id think about driving down there, but if they arent bolt on and ready to go then they are basically useless to me because I dont have the parts to replace them in the next two days.
CReynoldsMIZ
Well-Known Member
I agree, I hate these accelerator pump carbs. Im not going to change the voltage regulator until i can at least figure this thing out, because right now it looks like it is functioning properly.
Bnelson
New Member
I can't 100% vouch for them myself, but they did come off of a running ski... Was told they were good..They look to be super clean... At worst case you could give them a quick cleaning and go for it? Also have an RV cover u can try.... Anything you need in parts I could loan off this ski to see if it solves the issue...
I could always meet you at the I-70 exit... My house ain't too far from there
CReynoldsMIZ
Well-Known Member
Okay guys, me and BNelson are going to meet up tonight. Will his carbs bolt right up and run on the stock settings for my 99 SPX, will there be any timing differences? The timing on the RV is like .5 degree off, will i need to set it to the timing for a 96 XP? Or is this even possible.
Calling tuning experts [MENTION=51824]Matt Braley[/MENTION] and [MENTION=41828]Minnetonka4me[/MENTION]
Calling tuning experts [MENTION=51824]Matt Braley[/MENTION] and [MENTION=41828]Minnetonka4me[/MENTION]
Strizzo
Well-Known Member
timing should be fine.
hey i just thought of something, i remember a while back someone was having a load up when coming out of a no wake or long idle, and they found out that the butterfly shaft was actually leaking air at idle, causing wierd running. i wonder if it could be something like that causing your issue?
CReynoldsMIZ
Well-Known Member
Yeah I don't think that is the case here the butterfly's looked good. That was [MENTION=51350]Jetskigoodies[/MENTION] who had a bent butterfly that wasn't closing
Strizzo
Well-Known Member
no it was actually leaking through the shaft seal on the side of the carb under idle vacuum, so the venturi wasn't seeing the right vac and not opening the needle/supplying enough fuel.
CReynoldsMIZ
Well-Known Member
BNelson is going to overnight me a carb setup and a new RV from a 96XP. Do I need to get anything set up differently to accommodate this change?
Strizzo
Well-Known Member
no just set it up like a 96 xp without the accel pump. hopefully it fixes the issue.
when
CReynoldsMIZ
Well-Known Member
Shaft seal?
Strizzo
Well-Known Member
i guess the bushing or hole was hogged out or something, he ended up putting some bearing grease around where the shaft goes into the carb and it cleared it up.
CReynoldsMIZ
Well-Known Member
Whoever guessed "crooked ass, bent piece of shit rotary valve" please step to the front and claim your prize.
A local guy who has seadoos was nice enough to lend me some carbs and a rotary valve cover to see if that would fix it. I drove 45 minutes to his house picked up the stuff and got home about at 7:45. Got to work, cleaned them up spotless, switch parts around, put my needles and seats in since they are brand new, did the pop off test, all looked good. So all I had to do now was pull the rv cover and swap it out, even tho I didn't think mine was bad. Was going To put a thin coat of case sealant around the rv lip for insurance, but I needed to wipe the gas and oil off of it. Wanted to wipe behind the valve itself, so I scribed a line to make sure it would time back up, and when I pulled it off I noticed it was bent and wouldn't sit flat at all on the engine. No way at all. So now I'm hoping the guy has a spare 159 valve so I can put it back in and get this thing running right. Talked to racer dan, he thinks this is the problem as well as that valve needs to sit flush and perfectly flat, and this isn't even close.
So then I disassembled the new carbs, put all the stuff I had put into it back into the original carbs with the accelerator pump, and now I am just waiting hoping to get it all put back together tomorrow evening. Urggggg!!!!! Such a long day!!
Who thinks this is the problem?!?
Now, who thinks this is finally the problem!!
Sent from my iPhone using Tapatalk
A local guy who has seadoos was nice enough to lend me some carbs and a rotary valve cover to see if that would fix it. I drove 45 minutes to his house picked up the stuff and got home about at 7:45. Got to work, cleaned them up spotless, switch parts around, put my needles and seats in since they are brand new, did the pop off test, all looked good. So all I had to do now was pull the rv cover and swap it out, even tho I didn't think mine was bad. Was going To put a thin coat of case sealant around the rv lip for insurance, but I needed to wipe the gas and oil off of it. Wanted to wipe behind the valve itself, so I scribed a line to make sure it would time back up, and when I pulled it off I noticed it was bent and wouldn't sit flat at all on the engine. No way at all. So now I'm hoping the guy has a spare 159 valve so I can put it back in and get this thing running right. Talked to racer dan, he thinks this is the problem as well as that valve needs to sit flush and perfectly flat, and this isn't even close.
So then I disassembled the new carbs, put all the stuff I had put into it back into the original carbs with the accelerator pump, and now I am just waiting hoping to get it all put back together tomorrow evening. Urggggg!!!!! Such a long day!!
Who thinks this is the problem?!?
Now, who thinks this is finally the problem!!
Sent from my iPhone using Tapatalk
Man I owe ya a beer !!
Just read this after finding my GS does this BOOAAAAA or stalls with the first 1/4 throttle shot and I always though it squirted quite a bit of fuel from the accel pump and yes I did replace the lines.
After reading your post I went to check and yes in fact there is a restrictor in there!! WoW lol Thanks, I never would have known about that thing and probably just thrown the lines out!
But I supose its a pretty good primer as is
Now on to reading the rest of the thread
I'm not sure that the fact that the valve is bent is a problem but the fact that it could bend might mean its way too thin and contributing to the idle problem by allowing bleed through from one carb to the opposite cylinder.
As if it would be getting a double shot of fuel all the time.
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CReynoldsMIZ
Well-Known Member
Anyone else?? Hope to get one today or tomorrow
Strizzo
Well-Known Member
i think the RV being bent contributes to the issue, it needs to be able to seal off the ports when it covers them, while at the same time there needs to be small enough clearance between the rv and the cover so that the charge can't be stolen from one side to the other. get some plasti-gage or solder and check your RV clearance when you put the new valve in.
CReynoldsMIZ
Well-Known Member
That's what I was thinking. I don't have my dial caliper to measure the solder, but my rv cover looks in great condition. I really think this has to be the problem.
Strizzo
Well-Known Member
i think plastigage has a scale that comes with it for you to measure the width of the stuff and it tells you the thickness. been a while since i've handled it though.
YEP:
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