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zlat46

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Hi guys,

got a 97 xp

had a crazy bogging problem comes and goes as it like, rode it perfectly for about 30 mins then it started playing up, full throttle and it would barey do 5-10mph, wont really rev.


found originally the rear watebox hose clamp had snapped, so fixed that and done a service, ran great but still bogged at times, really annoying

so took it to my machanic and said rebuild the carbies, while there getting a solas and new wear ring.

i asked the machanic to check and change the grey fuel lines if neccessary.

visited the ski yesterday and he pulled of the selector valve along with inspecting the lines that go directly to the carbs the lines were clean az, and the makanic advised there is no need to change it as they look new inside.

spend a few hours today reading on the forum that they are a must, ive been trying to convince the machanic but he keeps telling its not neccessary.

i pick it up tommorow and will test it, but im sick of going out and comming back dissapointed.

any help would be appreciated.

thanks guys.

other then that everything has been cleaned and changed

eg new fuel filter, new selector, mesh under baffle cleaned, and now ofcourse rebuilt carbies.

im hopping this will fix the problem and i can start enjoying the ski

cheers

Zac
 
where and who are you using?
I test at markham.
Hopefully going today to break in new top end??
 
i have actually moved to australia couple months back

so probably wont have heard of the machanic

i physically saw the fuel lines myself and just seemed clean and normal, would it possibly be different for australia as they used a different grade of fuel? like we use 98octane premium, not ethonal mixed?

dono just trying to think outside the sqaure
 
If you've been using non ethanol gas you won't have the delaminating of the fuel lines like ethanol has. However your ski is still 15years and the fuel lines should be changed. Even with the black fuel lines should be changed about every 5 years.

Lou
 
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yea, unless you literally spliced the fuel lines open from beginning to end, you can't tell if ANY part of the fuel line is deteriorated or eaten away, causing tiny particles to build up in the carb...and if you DID do this, it would defeat the purpose and you'd need new fuel lines anyway.. just something to check out for your own curiosity after you change the fuel lines...
also, i know ive said this many times, but, i had the same problem, and i did what lou and everyone else recommends: take the plug boots off, clip the wires back about a 1/4 inch, then reattach the boots firmly with new zip ties.. this fixed my problem...and even if it doesnt fix yours, its a maintenence thing you'd wanna do anyway...good luck
try this and let us know what happens
 
You would say lucky till we find out how much per gallon...prob as much as 100 octane race fuel here...

The problem with the fuel lines is there isnt a rhyme or reason as to why some have no issues and some its really bad. My theory is not ethanol, but the other additives that processors add.

I read about 100 threads and blogs a few years back and I came to that conclusion. I have yet to see a machine I have done a line swap on that had the insides come apart here in MN....I have done about 25 machines now. I think MN has had ethanol gas longer then most state too. The stories dont lie though...I have seen many pictures from different areas of the country with bad lines. The one thing that I do see every time is loose connections due to the lines contracting, and the green goo from the lines interacting from the brass nipples.

My advice...just replace them, and clean the crap out of the nipples, as well as the selector. Its about $125 parts and labor at my shop.

Now....as far as the OPs problem...does it start super hard or not at all when warm? If so, its your needles and seats in the carbs. Does it hesitate when you slam the throttle? The accelerator pump system maybe clogged. When you have the sorts of hesitations, and fluctuations in RPM you have....QUIT TRYING TO DRIVE IT!!! If its running lean from dirty carbs, filters, etc all you are doing is shortening the motor life.

I always recommend that carbs should be thoroughly cleaned then put back together using GENUINE Mikuni kits, as well as GENUINE needles and seats. The N&S are not in the kit.

If you are paying to have problems like this resolved, make sure everything above is done, along with the oil injector lines and filter replaced. They are disassembled anyways, why not put in all new gaskets and needles and seats...or plan on doing the job again sooner than later. You can know 100% the fuel system is not your failure point...assuming your mechanic knows that they are doing.
 
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Thanks heaps for your response and help guys

I'm picking up the ski today even the mechanic advises to leave them I think for peace of
Mind might aswel change the fuel lines

Judy to confirm it's about 20ft I need in 1/4 inch is that right?

Is it all one size I need?

Is there a difference between hoses? Normal black fuel line or marine grade so the salt doesn't eat it?

Yeah the petrol rocks here, it's about $1.60 per litre for 98ron

Thanks heaps Im raking it out Tommorow I'll reirt back the results

Fingers crossed I have a good day out

Cheers

Zac
 
$1.60 per litre that's about X4 = $6.40 per just over a gallon US measure.

Reg or marine grade fuel line concerning the salt...good question but I don't know the answer.
 
Fair enough,

So just about to go out and get fuel line, I read if on the parts catalogue two different sizes

So do I get 20ft of 8mm and one metre of 6mm?
Just getting abit confussed or are people running the 8mm all over?

Thanks again
 
6mm = 1/4"
8mm = 5/16"

I personally would not bypass the fuel selector valve, I would replace it, they're only $ 20.00. Not sure which engine you have if it's the 951 it used about 20' of 5/16" and about 4' of 1/4" fuel line. For the 787 about 25' of 1/4". Also I've always used a good quality cable tie, Panduit brand from Graybar Supply.

Lou
 
It has the 787 engine

So should I just buy the 25ft of 1/4?

I've read some posts they don't go onto the nipples good? Getting a smaller diameter then the parts carillons says is that a good idea? Or should I follow your first recxendation 20ft of 5/16 and 4th of 1/4?

When you say 25ft of 1/4 u mean run the one size through the whole lot?

Bought to head out soon and buy it all

Thanks guys
 
That's right, the 787 uses only the one size 1/4".

Just remembered something else, 25' will be plenty to do the fuel delivery hoses. You really don't need to replace the vent lines.

Lou
 
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Zlat.I am in Oz.Gold Coast.We DO have fuel line problems.Where are you.I'll help any way I can.Parts etc.Who ,what ,where.I've rebuilt my ski with the help from the guys here so have a bit of info stored.
When you do the fuel lies.DO THEM ONE AT A TIME.Loosen all the clamps and replace them with good stainless/steel ones.Pull one hose only,cut a new one about an inch longer than the old one.Put on the new clamps and work out which way it is going to face,so you can tighten it,and the others.Before you start.Take a heap of pictures.Just in case.:cheers:
 
I just did my 787. I used almost 21 feet including all vent lines. I would install an in-line fuel filter while you are cutting lines.
Fram G12 is what Dr Honda recommends.
 
YES, I agree do one at a time. the only area where it gets tricky is on the fuel selector. You have 3 lines going to it. so use tape and mark them off. 18 SS clamps too
 
Thanks crisso and everyone

So I will go out and buy about 25ft of the 1/4 line and give it a crack

Is it hard getting to the ones under the carbu without pulling it off? The carbs have just been rebuilt yesterday so no need to clean in there just thayght before I take her out I wana make sure absolutely everything is done right.

I wonder why the parts manual recommends the 5/16 hose and also the 1/4 I'm afraid by putting the smaller line that it won't allow enough fuel?

Sorry to bomared you guys with these questions just wana do it right by Tommorow so I can take her for a burn

Cheers
 
1/4 inch hose is the correct size for your ski. 5/16 inch will be too big. :cheers:
 
Not a difficult DIY project. On my 717 motors I first bought a roll of 1/4" gas line, I think it was 50 ft. I found that only a few fittings were 1/4", most were 5/16", and the parts store took back my unused 1/4 hose and gave me 5/16. Replaced the lines on both motors in a few hours.
 
I want to do it the right way as it is now. Does anyone know how much roughly of 5/16 and how much of the 1/4?
Cheers

Zac
 
It looks like I was wrong in telling you all you needed was 25' of 1/4" fuel line, I apologize. I've done at least six ski's and all of them have used only 1/4", but it appears yours is different. I know that the 951 motor uses 5/16" and 1/4" hoses so maybe BRP just designed one fuel system for both motors.

O.K., I just checked the parts diagram and it looks like your ski takes a mix of 1/4" (6mm) and 5/16" (8mm) fuel line. If you look at the parts diagram part(s) no. 11 is 1/4" hose and part no. 14 is 5/16" hose. The 5/16" hose goes from the fuel baffle to the fuel valve, from the valve to the water separator/filter, and on to the carbs. So this is just a guess I would think you would need about 12' of 1/4" and 12' of 5/16" hose. The carb. lines, return and pulse hoses are 1/4". The hose cost is only around 1.00 per foot, I would go ahead and get 15' of each, might save yourself a trip to the parts store.

http://partsfinder.onlinemicrofiche.com/seadooforums/Seadoo_oem/Seadoo_PWC.asp?Type=13&A=47&B=9

Sorry for the mix up.

Lou
 
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Seadoobuddy said:
I just did my 787. I used almost 21 feet including all vent lines. I would install an in-line fuel filter while you are cutting lines.
Fram G12 is what Dr Honda recommends.
Click to expand...


Ok all done!!! I've used all lines to factory specs as far as size goes just in the black auto lines, the only line I used the bigger line were the smaller line is Reccomended was from the additional in line filter as the fittings were larger and just got the 5/16 on

Other than that it's all good, I'm guessing that one line that was 8mm instead of 6.4 is not going to cause performance issues? Or too much fuel? I'm guessing not as the nipple to the motor is the smaller type so only a certain amount will go through?

Testing it this morning will let u know how I went with the new solas/wear ring/ carbs rebuilt and general inspection and service also changed all the water hoses as the old
Ones were beated
 
Zlat. Take the plugs out and quick the ski over.But 1st put the plugs on the grounding posts
 
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