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Ticking noise when low on gas

  • Thread starter Thread starter c3powil
  • Start date Start date
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c3powil

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Things are going well for me and Giselle, my GS-L model 750. ;) I recently did a chain and sprocket change (530 conversion) and all is well.

However, it seems to me that whenever my fuel indicator starts indicating a low fuel level, the engine can start ticking on the left side. It doesn't bother me too much, because I know the GS series deals with a problem like this and it's nothing to worry about, but why only when my fuel is low? Anyone?
 
It's possible that it's there all the time, but you can only hear it when the fuel is low. :-k

The amount of fuel in the tank might be a damper on the noise. As the level gets low, there is less damping.

Next time you get to where you can hear the noise, get on the left side of the bike to isolate the area. Fill the tank then start the engine. Get back down on the left side to see if you can still hear the noise.

.
 
Hmmmmmm, I think I may have adjusted one a bit in the loose side.
 
Or the float arm is just so close to the side of the tank its ticking. Can the and tweek it a tad to the right.
 
Okay, so I ran low on gas and the noise came back, but as soon as I flipped the petcock to reserve there was no noise.


weiiirrrddd
 
Guess youve got that RARE RARE switch me to Reserve reminder alarm...bout all I got left on this one.
 
Slight hole in the petcocks diaphragm allowing it to lift off the seat, loose vacuum returning to the seated position and repeated over and over again?
 
It has to have something to do with my #2 carb. Recently it's started dripping out of the overflow tube...
 
As the days go by, my carbs are leaking more and more out of the drainage tubes. I'm beginning to think the petcock is on its way out as Eli69 stated. Is this a usual symptom?
 
Best check your oil now, see if it has a gas smell to it. Probably need to pull the tank and get the gas shut off ASAP anyways.
 
My bike left gas puddles one day. It surprised me since I had rebuilt carbs a year ago. Anyway, I just tapped on the float bowls and it cured it.
 
c3powil said:
It has to have something to do with my #2 carb. Recently it's started dripping out of the overflow tube...
Click to expand...
But your #2 carb has nothing to do with the petcock, except receive the gas that it provides.

Your vacuum port is on #3 carb.
icon_shrug.gif


.
 
If you have VM carbs fuel shouldn't get into the oil. That's what the overflow tubes are for.
It goes out the overflow before it gets high enough in the float bowl to go into the engine.

The EPA got rid of them for the CV carbs, now the fuel goes into the engine, fills it up, goes out the breather, goes through the airbox, and then makes it all the way to the floor. The difference is now you can't see it when it drips a couple drops, you usually don't notice until the engine is damaged.

I am going to put overflow tubes in my CV carbs. Fvck the EPA.

Petcocks can fail in several ways. One is not shutting off completely. Another is fuel going down the vacuum line into whichever carb it's connected to.
 
Thanks tkent!

I know the petcock is leaking because when I took the tank off it kept dripping and there is no prime position, so that's cleared up.

I'm not exactly sure about all of my carb tubes so it's entirely possible that I mixed them up.

Can someone provide me with a link to where I can purchase a new petcock assembly? I can't find one that will fit my bike.
 
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