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Leaky carb

  • Thread starter Thread starter AirCooledFour
  • Start date Start date
A

AirCooledFour

Guest
OK, small issue I'm sure, but I rebuilt my petcock while doing my restoration and this is my problem: I have BS34s from wiredgeorge and everything was fine until I rebuilt the petcock and re-installed everything. Now when I park it I get gas slowly dripping out of the middle-right carb air filter. Even after I pinch the fuel line.
(When I remove the fuel line from the petcock I get a tiny trickle in ON and RES and a flow from PRIME)
Could there be something wrong with my carbs? They were fine two months ago...
 
AirCooledFour said:
OK, small issue I'm sure, but I rebuilt my petcock while doing my restoration and this is my problem: I have BS34s from wiredgeorge and everything was fine until I rebuilt the petcock and re-installed everything. Now when I park it I get gas slowly dripping out of the middle-right carb air filter. Even after I pinch the fuel line.
(When I remove the fuel line from the petcock I get a tiny trickle in ON and RES and a flow from PRIME)
Could there be something wrong with my carbs? They were fine two months ago...
Click to expand...

There should be NO gas coming out with the petcock in ON and RES. You may also be getting gas down the vacuum line and into the engine/carbs that way.

Regarding those georgie carbs, good luck with that; lots of reported complaints with the quality of work he does.
 
Dry vacuum line

Dry vacuum line

The vacuum line is dry... I read elsewhere here that the type of filter used could have some issues? I am using one of those clear glass ones that can be opened up and cleaned. 1/4 inlet-outlet. Maybe I should have left the petcock alone... I decided to rebuild it "just because" Anybody have a work around?

Nessism said:
There should be NO gas coming out with the petcock in ON and RES. You may also be getting gas down the vacuum line and into the engine/carbs that way.

Regarding those georgie carbs, good luck with that; lots of reported complaints with the quality of work he does.
Click to expand...
 
Filters can cause problems unless they are designed for a gravity feed system (most automotive filters are not suitable), plus they sometimes force the fuel line into a loop. Can't think of why this would cause the carbs to overflow though.
 
On & Off

On & Off

What are the options for a new universal On & Off / Res petcock? Are they preferred? Who has them?
 
Diagram?

Diagram?

I know what I need, some kind of detailed diagram of a '77 petcock, I might have rebuilt it backwards?

AirCooledFour said:
What are the options for a new universal On & Off / Res petcock? Are they preferred? Who has them?
Click to expand...
 
AirCooledFour said:
I know what I need, some kind of detailed diagram of a '77 petcock, I might have rebuilt it backwards?
Click to expand...

Here you are...

28.gif



There are mixed reviews regarding the rebuild kits. Getting the metal surfaces very smooth seems to be very important. If you spent the money on a new one, you wouldn't have to worry about it for another 30 years or so. Just a thought. :)


Thank you for your indulgence,

BassCliff
 
Just buy a new petcock
Did the carbs run ok since you got them back?
 
AirCooledFour said:
I have no complaints about the BS34s I got from wiredgeorge. Absolutely flawless.
I think I will get this http://www.z1enterprises.com/detail.aspx?ID=1716 petcock from Z1, I don't need the big reserve either. I watch the miles and just fuel up when I get to around 150 miles.
Click to expand...

Don't forget to check the bolt spacing on your old petcock before ordering. The early GS's typically took the large lever petcock with different spacing from the later bikes with the small lever petcock.

Cycle Parts Nation has an OE petcock for $68. Not cheap but could be worse... http://www.cyclepartsnation.com/pages/parts/viewbybrand/1/Suzuki.aspx
 
Last edited:
Ditto what Aircooledfour said about George Lesho...I got mine done before i had found the forum and was a newbie to repairing cycles two years ago. They have been flawless and i have no complaints except had i known about the forum and how to do it myself it would have been way cheaper. Cant fault him on that either... he has to spend his time, etc, etc, and thats how he makes his living.
 
yeah only wish i had written down the settings you told me..LOL I should have you Pm me those to add to my tech notes file.
 
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