pop than my carbs started leaking? help

[Guest]

I put my fresh carbs back onto my bike this evening (dipped and new O rings) and tryed to turn it over for the first time. Well she turned over and started than there was a pop and it died when I went to restart it gas was coming out of the carbs but it did start. No gas apperd to be coming out of the over flow lines.

What should I look at first to try and fix that gas's leaking.

The bike is a 1980 gs750L stock airbox.

Adam

[Dave8338]

How's your petcock ?

[akiy]

How's your petcock ?

Working....I think... If it was not working right what would be happing?

[Dave8338]

Your fuel would be continuously flowing, even with the bike off. Unless your floats and needle valves are working exactly the way they should, fuel will bypass the floats and flood the carbs, much like you're describing.

[akiy]

Your fuel would be continuously flowing, even with the bike off. Unless your floats and needle valves are working exactly the way they should, fuel will bypass the floats and flood the carbs, much like you're describing.

OK I will have a look at that then. What part of the carbs would the gas leak from in that sanareo?

Thanks for your help and sorry for what might be stopped questions just trying to lurn as much as I can from my mistakes and success.

[Steve]

No gas apperd to be coming out of the over flow lines.

That would be a neat trick, considering that you don't have any overflow lines.

.

[tom203]

This style carb-CV- doesn't have overflow line,bad petcock and/or leaky needle seats just lets fuel flow into the carb throat (see pic of carb)
Also make sure you understand hose connections to carbs -see link

http://members.dslextreme.com/users/storagecliff/images/hose_locations.html

[akiy]

This style carb-CV- doesn't have overflow line,bad petcock and/or leaky needle seats just lets fuel flow into the carb throat (see pic of carb)
Also make sure you understand hose connections to carbs -see link

http://members.dslextreme.com/users/...locations.html

When I said over flow I meant vent lines. How would I check to see if I had a sticky neaky needle seats?

[Dave8338]

First, I would confirm that your petcock is working correctly. Pull the fuel line from the fuel tee between #2 and #3 carbs, with your petcock set in the RUN position. If you have fuel flowing, you need a new petcock. If no fuel flows, pull the vacuum line from the #2 carb nipple and apply suction to that line. If fuel flows from the petcock when you do this, it is working correctly in the run position.

Next, with the lines still removed, turn the petcock to the PRI position. If fuel flows in that position, you won't need a new petcock.

If the above mentioned steps fail to yield the results listed, DO NOT try to rebuild your petcock to save a few bucks. MOST have had limited to no success from the rebuild "kits" and you run the risk of repeating the problems you are having now.

The fact that you have raw fuel leaking out of the carbs OR into the carbs, tells me without a doubt, that your floats aren't doing their jobs OR that the float level is set too high.

[Kaiser Sosei]

Next, with the lines still removed, turn the petcock to the PRI position. If fuel flows in that position, you won't need a new petcock.

Just want to add, sometimes you need some vacuum to get it started but once started should flow freely in the Prime position.