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Big Gas Leak

  • Thread starter Thread starter Anonymous
  • Start date Start date
A

Anonymous

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I just bought an 81 GS850G with only 3500 miles on it. The guy I bought it from said it might need a new fuel line because when he took it outlast year, it started leaking gas. Well I got it home, inspected the line and there was no problem. I started up the bike and soon enough, gas starts pouring out of the air cleaner box. Please help, I don't know whats going on here.
 
You probably have a bad petcock, bad carb bowl float levels, or both.

Does your petcock have just one tube or one big and another small?

Michael
 
its got one big one and a smaller one comming out of it, but I don't think thats the problem. I ended up taking the carburators apart ans there was all kinds of corrosion that I ended up cleaning out, and the needle and seat for the floats were also quite clogged.
 
I'm not sure yet. there was a small plastic peice in the top of the carb. that was melted that I had to order. hopefully it will be in monday or tuesday. then I'll find out if it is fixed or not.
 
If you take the top cover off the carb, the is like a plastic rod thats connected to a metal pin that goes down to the bottom of the carb.
 
I just ordered the plastic and metal rods. The Entire carb was $218 each. I only paid $500 for the bike.
 
When I tried something like that on a Honda they wouldn't let me buy just one piece. All or nothing... I chose nothing. :D

Michael
 
yea, i think thats usually how it is, but I have a friend that works at a dealership and he just pulled up a diagram of the carb, and just chose those individual parts to order.
 
Dealers are minions of Satan. I'm sure of it. Glad you got a special connection though. Grrr... Dealers aggravate me. You know that if you were just Joe Nobody they would be all or nothing on the carb. Not that they can't sell you just one piece. They just want to twist your arm and milk the money out... Grrrrrr.. Hisss :evil: :evil: :evil:

Michael
 
oh yea, i know what you mean. the only reason I know him is cuz my dad bought a bike new from the dealership and put like $3000 worth of accessories on it through this guy in parts.
 
aight well, my parts finally came in and I put them in the carb this morning and tried starting it... I get the same exact problem. The bike starts, then begins to leak gas out the airbox side of the carbs. I don't know what to do at this point. I paid very little for the bike (basically cuz I'm broke) and for new carbs. I was quoted a price of $218 each and I would probably need all 4. which is much more than I paid for the bike to begine with.
 
Don't be discouraged. Your contact with a money-grubbin dealer has you thinking that you have to throw money at the problem. The problem is still your floats or petcock.

So where, exactly, is this gas coming from?

Michael
 
Cheap Carbs for GS850

Cheap Carbs for GS850

You can buy carbs for this bike on ebay real cheap. Just do a search
for GS850 on ebay.
 
mopolopo said:
Don't be discouraged. Your contact with a money-grubbin dealer has you thinking that you have to throw money at the problem. The problem is still your floats or petcock.

So where, exactly, is this gas coming from?

Michael
Click to expand...

gas is comming out the air intake part of the carb and dumping the gas into the air box.
 
cmorin543, your problem is float related or the float valve needle(s) are not sealing.
First, you have to clean everything related to fuel flow or you'll get nowhere. The tank, petcock and fuel passages to the float needle valves must all be cleaned and if you have rust particles, the tank must be repaired.
I think your problem is just junk stopping the valves from sealing, but with the carbs off I would inspect the valves for wear. Make sure the needle end does'nt have a groove worn into it or a weak/broken spring. Also be sure any o-rings are there and in good shape. Check one carb at a time and don't mix the valves with other valves. Each valve and its seat wear as a unit.
You can also check the floats for free movement and condition. Also check the float heights.
If you clean EVERYTHING and check/adjust or replace any float related parts as I said, your bike will stop leaking.
PS: When the bike is RUNNING, a failing petcock will not cause the carbs to overflow.
 
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