Bogging issue check

[S.T.B.]

During the course of fixing a multitude of problems w/ the 97 GTX I bought last week, I came across an issue w/ the water seperator. When I cleaned it , I didn't like the way it seated. Anyway, after the whole filter / fuel line change, carb cleaning, it would still bog at high end. So I go back to this seperator and it won't tighten anymore w/o jumping a thread, so for the short term, I wipe some Hi-perf Copper Loctite RTV around the seal, let it dry and test drive. NO issues, it runs 7500rpm w/o a hiccup.

If you are having any suspected fuel delivery issues, this can't hurt.

I'm sure someone has submitted a replacement for this OEM part which I'll do during the next cleaning.

Hope it helps someone. Here is a pic.


Steve

 

[flowmasterman]

seems that after you take off the water seperator the gasket doesn't fit back on it very well if its old, I just had a heck of a time trying to get one back on, it was jumping a thread because the gasket wasn"t seated in the groove very well, if you get a new gasket that should fix your problem, that way you will still be able to pull the seperator/filter off and on as needed.

 

[LouDoo]

I'm not being critical, especially if your method worked, but replacing the "O" ring would have the same effect.

Lou

 

[AdamXP800]

It runs 7500 rpm? Stock motor? Stock compression?

 

[AdamXP800]

Just saw the picture, that sir is what I call a ghettoooo fix lol. The O rings aren't very expensive, but I'm glad it worked for you.

 

[Robj]

Sometimes you just need to do what you have to to get it running. Not everyone has easy access to parts. I would do the same, and get the new O ring when you can.

 

[AdamXP800]

Never said I have never ghetto rigged something. It was more of a compliment in my opinion. If it still leaks, hell just add alittle more sealent .haha

Just stating the orings are cheap, and would take 2-3 days max to receive. Might spend that amount of time trying to get the RTV off

 

[Sportster-2001-951C-Stock]

Wonder how many thousands of ski engines have seized due to this single common failure?

 

[S.T.B.]

Yea,
This was a temp fix like I said and got us on the water the past 3 days. O-ring would take a week and no guarantees. Both threads inner and outer didn't look that great. It's not the best design, real easy to bump while you're in there. I'd like something a little more heavy duty, maybe I can modify something.

I'm under the impression that it's stock until I find out otherwise, yes, pulls just under 7500. Top speed has been 51 so far, but usually in the 45-49 range.
Maybe if I do the carbon ring it will pick up a little.

Steve

 

[AdamXP800]

Never seen a 787 GTX turn anywhere near 7500 rpms in the water. Mine runs 55-57 at 6880-6950 rpm

 

[SEA-MONSTER]

During the course of fixing a multitude of problems w/ the 97 GTX I bought last week, I came across an issue w/ the water seperator. When I cleaned it , I didn't like the way it seated. Anyway, after the whole filter / fuel line change, carb cleaning, it would still bog at high end. So I go back to this seperator and it won't tighten anymore w/o jumping a thread, so for the short term, I wipe some Hi-perf Copper Loctite RTV around the seal, let it dry and test drive. NO issues, it runs 7500rpm w/o a hiccup.

If you are having any suspected fuel delivery issues, this can't hurt.

I'm sure someone has submitted a replacement for this OEM part which I'll do during the next cleaning.

Hope it helps someone. Here is a pic.


Steve

Get rid of that POS water separator if it is no good, on my 97 GTI (sold) I installed a mini Racor 10 micron & water separater fuel filter and the screen in my carb remained spotless ever since!

 

[S.T.B.]

SMonster,

Is this what you have ?

http://www.boats.net/parts/detail/yamaha/Y-MAR-MINIF-LT-AS.html

 

[S.T.B.]

I'll double check next time out if you think it is way off. I still have that slipping issue occasionally , probably due to the carbon ring someone had mentioned. RPMs do spike when this happens, possible I have that # in my head.

Are your carbs rejetted ?