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Vacuum Line

  • Thread starter Thread starter jinkside
  • Start date Start date
J

jinkside

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Well, after a month of dreading some horrible maintenance to get my girl running again, I sat down and ran down the checklist. She only needs fuel, air, and spark, right?

1) Kill switch in the Run position? Check.
2) Gas in the tank, no funky smells or rust? Check.
4) Battery charged? Check.
5) Not a Monday, third Tuesday, or on the way to a date? Check.
5) Spark in both cylinders? Check.
6) Fuel in float bowls? Check... but not as much as I expected.
7) Fuel flows in PRIme? Check. Wow, that's a lot of gas!
8) Hey, I wonder what this loose hose connecting the left-side carb to the petcock... Huh, it seems loose. I'll shove that back in and see if it works.
...
Nope. "Well, I just emptied one of the carb bowls and the other one was already low, so... prime for 10 seconds or so..." Bike starts!

So my vacuum line is loose and likes to slide out. Any suggestions on how to secure it?

As a bonus, my oil smells like it's entirely gas at this point. I'm inclined to change it again and see if it stays oily instead of fuel-y. Any suggestions before I jump straight to "head gasket" for causes?
 
Hi,

The usual suspect for the "gas in the oil" caper is a leaky petcock, or a petcock left on the PRIme setting for too long (like over night). It is possible that the float valves are leaking and/or the float height is set to low (whick makes the level too high once you turn the carbs right-side up).

Thank you for your indulgence,

BassCliff
 
jinkside said:
So my vacuum line is loose and likes to slide out. Any suggestions on how to secure it?
Click to expand...

yes get a clip and put it on so it stay in place

something like this

Metal_clips_Electric_accessory_Pipe_clamp_Hose.jpg



or

Clamp_FBS_add1.jpg
 
Or, if you just get some new hose (get genuine OEM stuff, not cheap stuff from auto parts store), you don't really need any clamps. :D

.
 
It stays on on the petcock side; it's where the metal elbow slides into the carb that I have a problem it was on there really quite securely before I dipped my carbs and took a good deal of yanking to finally get out. Now it just slides in and out with a light touch.

I was thinking some kind of high-temp Loctite might work.
 
Loctite or any other kind of goop is not your friend in this case. Try snipping off 1/4" of the tube at the carb side, or get a new tube. Don't bother trying to clamp it Jed.
 
No, no. The tube is just fine. The metal elbow that connects the carbs to the tube slides in and out easily.
 
I'm beginning to think that maybe the thing I removed isn't supposed to come off...
 
Here's the bit I'm talking about:
DSC_1535%20elbow.jpg

It goes in right underneath the pilot screw and was in really tight when I took the carbs apart for cleaning. If you look closely, you can see the imprint my vice grips left on the soft, squishy aluminum body of the elbow.

The question, as I see it, is how do I make it so that that seats securely instead of sliding out over the course of about a mile. Loctite was my first thought, but that seems like it would end in tears, eventually.

On an unrelated note, what's the giant silver knob-thing below that port?
 
It shows up on my post #11 already. You don't see it there?

I'll attach it again for good measure:
DSC_1535%20elbow.jpg

In the above picture, you can see the "elbow" that I've talked about in my other posts. Suggestions on making it stay attached to the carbs?
 
jinkside said:
It shows up on my post #11 already. You don't see it there?

I'll attach it again for good measure:
DSC_1535%20elbow.jpg

In the above picture, you can see the "elbow" that I've talked about in my other posts. Suggestions on making it stay attached to the carbs?
Click to expand...
I can't see it, either, and I have registered access to some Google sites. Please consder hosting your pictures on Photobucket for posting here. As GateKeeper mentioned, there are other sites, but Photobucket seems to be the most friendly to use as a poster and as a viewer. One of the worst, from a viewer's point, is ImageShack, please avoid that one, if you can.

.
 
Weird. I had another user here at work check it out, just to make sure and it shows up fine for him as well. In fact, I was even able to upload it by posting the URL into Photobucket.
Here it is again:
DSC_153520elbow.jpg
 
OK, NOW I see it. :D

No idea why you might have removed that fitting instead of simply slipping the hose off of it, but you might try some super glue to hold it in place.

.
 
I was trying to break the carb down into as many pieces as possible so that I expose everything to carb dip. I may have gotten a little overzealous.

But really, superglue works?
 
I have never had to fasten that part back in, but Super Glue is supposed to bond metal to metal.

A bit of Loc-Tite might work, too. Not sure if blue or red would be better.

Using Loc-Tite would allow you to force the parts apart again, if necessary. If you wanted to make a more-permanent repair, mix up a little bit of JB Weld.

.
 
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