• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

Anyone know of a high quality vacuum petcock?

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

Guest
I had a bad petcock. Fuel came out of the vacuum line. No big deal. Replaced the petcock with https://www.amazon.com/Petcock-Assembly-Suzuki-GS1000-44300-44011/dp/B01N6RD8BA. Now that one wants to shut off every other time. And went it does not. Fuel comes out the carb over flow tubes. I want to paint the bike. But, I do not
trust a $16 petcock on a $1000 paint job. Do the Pental vacuum petcock work 100% of the time? Or does anyone else know of a vacuum petcock with an off switch? All the vacuum petcocks that I have seen are RES/ON/PRI. So if the petcock leaks there is no shutoff.
 
The OEM Suzuki petcocks are fine. The don't have an OFF position but it doesn't matter. Check Parts Outlaw for a good price.
 
Thanks for the tip on the price! Still $300. But, I will give it a go.
 
I've bought two petcocks from Georgefix on Ebay.... And compared them in detail with the originals... They appear to be identical so I suspect he uses whoever is supplying Suzuki... If he has the model you are looking for he is cheaper.......
 
I agree ...Georgie's petcocks look good..mine had a better casting finish than the original unit - likely due to improved manufacturing techniques .
 
I bought a George petcock that looked identical to the OEM...only it failed right away. It was the leverless version with the check valve in the back cover (check valve didn't work).
 
Steve said:
Give us a clue what bike? :pray:

.
Click to expand...

He must be looking for a petcock for a 1000.

Although the link shows one for 60 bux, I don't believe it will fit the 1000 model. I could be wrong though but when I looked, it seemed like it was a no go.

Personally, when the time comes to replace mine, I think I will go with the Pingle. Can't see 300 big ones for an OEM.
 
tom203 said:
Parts outlaw shows one for gs1100e for about $100
Click to expand...

That's a different p/n than the one he linked to in post#1. He is looking for one for a 79 GS1000.
Not sure what the difference is, but if the one for the 1100E will work, then I had better buy one.

I based my assumption on the fact that in post #3 he mentions $300 for OEM.
 
Last edited:
That is correct. I have a 1979 GS1000EN. The spacing between the mounting holes is 44mm. In 1980, I think they when to 34 mm. In any event, my $16 petcock that is an OEM replacement is still leaking. I checked the carbs and it was #2 that was leaking. So, pulled the carb and compared #1 and #2 (#1 was not leaking so I was using it for reference). Looked at the float height, needle and etc.... All looked good. Put it back together and it did not leak! Filled the gas tank to the top and put it on PRI and #1 started leaking!!!!! WTF. So, I might have switched one part in number one and to number two. Next I am going to put parts in #1 (float, needle and etc...) in number two and see if the leak moves back to #2. But, during the troubleshooting I installed a manual shut off in the fuel line. I am glad I did. I shut it off and I am going to work on it next weekend. Fixing this should not be this hard. Even when I get the new petcock, I think I will keep the shut off valve in place.

This is my first classic bike. I knew what I signed up for. It is a challenge.
 
Just got my Suzuki OEM petcock. I took it apart. The guts are different from the $16 one. For example, the rubber washer on the end of the stem that plugs the hole when the bike is off. Completely different. The plastic stem tower that did not have a hole in the $16 one; has a hole in the Suzuki OEM one. The outside of both petcocks look the same. I will update the thread once it is installed. They do not make Suzuki OEM petcock anymore. But, hopefully Suzuki makes a rebuild kit for it with OEM parts.
 
Put the OEM petcock in. Problem solved. Just finishing out the thread. If you need a new petcock buy a OEM rebuild kit. The $16 petcocks on ebay ones are junk. My bike still leaks when I have it on PRI when it is parked in the garage. But, I think that might be the float needles. That is my next project.
 
If you really want the problem solved, don't leave your bike parked with the petcock on PRI. PRI (prime) should only be used to fill the bowls after the carbs have been serviced or the bike has been sitting long enough for evaporation to occur. You should only leave the petcock set to PRI for about 30 seconds or so, then turn it to ON or RES. The float needles were never designed to hold fuel back while the bike isn't running.
 
blittlej said:
Put the OEM petcock in. Problem solved. Just finishing out the thread. If you need a new petcock buy a OEM rebuild kit. The $16 petcocks on ebay ones are junk. My bike still leaks when I have it on PRI when it is parked in the garage. But, I think that might be the float needles. That is my next project.
Click to expand...
It is most likely the o-rings around the needle seats. They keep gas from bypassing the needle and seat. Get an o-ring kit from cycleorings.com.
 
jsandidge said:
If you really want the problem solved, don't leave your bike parked with the petcock on PRI. PRI (prime) should only be used to fill the bowls after the carbs have been serviced or the bike has been sitting long enough for evaporation to occur.
Click to expand...

The OEM ones work fine, as long as you follow the above advise.
I rebuilt the OEM a couple times then got a different petcock (non-vacuum).
 
Aaaah good to know. So, there is nothing wrong with the needles. The PRI position was not designed to do that.
 
You must log in or register to reply here.

Similar threads

adam83
Fuel Petcock interchangability for a 1983 GS1100E?
Replies
0
Views
54
adam83
adam83
jharvey
When your Petcock is too big for its britches
Replies
17
Views
285
jharvey
jharvey
W
Bad petcock?
2
Replies
25
Views
240
dgates1
dgates1
W
82 1100ez vacuum petcock question
Replies
9
Views
110
rphillips
R
R
GS850GL plea for help - bike won't pull past 5000 rpm
2
Replies
35
Views
393
luftkoph
luftkoph
Back
Top