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MystixVintageCruisn
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Joined: January 19, 2018
Posts: 98
Location: Florida
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 Posted: Mon Jul 23, 2018 10:37 pm Post subject: 1968 VW BUS Carburetor Rebuild gone wrong? |
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Hey everyone, I've stayed off these forums due to a lot of drama that my van and I have cause but everyone seems to keep referring me here so here I am again.
I got my carb rebuilt a while ago and it seems like my mechanic replaced that gold screw with the needle which is fine but it's not the same as factory and doesn't extend all the way therefore it doesn't work.. (if anyone can tell me the name I would really appreciate it so I don't seem so ignorant) I need to put the factory one back in which is still in mint condition
I would gladly do the work myself but being a rookie I am scared to attempt the operation without a mechanic there.
If any of you know of any mechanics in the NW Indiana area preferably around Gary... I would really appreciate the help.
I know you all prefer photos but I have video of my engine bay/chassis that I am going to link here just skip ahead for the engine.
Thank you for your help. I really appreciate any help I get.
Link
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airschooled
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Location: on a bike ride somewhere
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| Posted: Mon Jul 23, 2018 10:48 pm Post subject: Re: 1968 VW BUS Carburetor Rebuild gone wrong? |
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Hi there,
I watched the 'engine' section of your video and I don't really see much that would present a question.
The caption says "30pict carburetor." Volkswagen had 3 versions of the 30pictX carburetor, with the last digit beign a 1, 2, or 3 depending on how it was made and ported for airflow. Which is yours? (It says on the left side of the carb.)
I'm not sure what you mean by "gold screw" but you can help us by telling us where it is; is it left, right, front, (as if you're sitting in the drivers seat,) or rear, (same)? How round is it? A quarter of an inch? More? Less?
Do you have a question about your carburetor? Or do you just want to learn more about it? I know a guy who can help with that last one……
Robbie
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MystixVintageCruisn
Samba Member
Joined: January 19, 2018
Posts: 98
Location: Florida
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| Posted: Tue Jul 24, 2018 7:25 am Post subject: Re: 1968 VW BUS Carburetor Rebuild gone wrong? |
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| asiab3 wrote: |
Hi there,
I watched the 'engine' section of your video and I don't really see much that would present a question.
The caption says "30pict carburetor." Volkswagen had 3 versions of the 30pictX carburetor, with the last digit beign a 1, 2, or 3 depending on how it was made and ported for airflow. Which is yours? (It says on the left side of the carb.)
I'm not sure what you mean by "gold screw" but you can help us by telling us where it is; is it left, right, front, (as if you're sitting in the drivers seat,) or rear, (same)? How round is it? A quarter of an inch? More? Less?
Do you have a question about your carburetor? Or do you just want to learn more about it? I know a guy who can help with that last one……
Robbie |
I am looking for someone who knows how to do this so they can help me out by coming over and doing this job for me. I don't mind compensating...
It's just urgently needs to get done to be able to move onto the next step of my restoration.
It's the Gold bolt with the needle that extends that allows the fuel to pass through.
Hopefully these pictures will help. I really appreciate your help and response to my thread.. Thank you!
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MystixVintageCruisn
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Location: Florida
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| Posted: Tue Jul 24, 2018 7:42 am Post subject: Re: 1968 VW BUS Carburetor Rebuild gone wrong? |
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Here is the part I'm talking about
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xyzzy
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Joined: March 24, 2014
Posts: 229
Location: Encinitas, CA
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| Posted: Tue Jul 24, 2018 8:37 am Post subject: Re: 1968 VW BUS Carburetor Rebuild gone wrong? |
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That's the needle valve. It allows fuel to fill up the bowl in the carburetor. As the fuel level rises, the float rises with it pressing against the needle valve to stop the flow of fuel into the carburetor.
You adjust the amount of fuel in the bowl by using specially thick washers between the needle valve and the lid when you screw it into place and/or bending tabs on the float. This determines the height of the fuel in the bowl.
You should be able to blow air through the top of the needle valve with your mouth, and as you press the needle upwards it should stop the airflow. The needle valve should not "stick" when released. Ultimately the newer one should be fine even though its a different "style" -- you just need to verify that the amount of fuel in the bowl (the "float") is within specs for your carb. The float should raise up to shut off the needle valve.
Nothing wrong with using the original one as long as you verify it works, and doesn't stick. It's literally as simple as unscrewing one and screwing a new one in. Don't over-tighten.
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MystixVintageCruisn
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Location: Florida
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| Posted: Tue Jul 24, 2018 9:30 am Post subject: Re: 1968 VW BUS Carburetor Rebuild gone wrong? |
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| xyzzy wrote: |
That's the needle valve. It allows fuel to fill up the bowl in the carburetor. As the fuel level rises, the float rises with it pressing against the needle valve to stop the flow of fuel into the carburetor.
You adjust the amount of fuel in the bowl by using specially thick washers between the needle valve and the lid when you screw it into place and/or bending tabs on the float. This determines the height of the fuel in the bowl.
You should be able to blow air through the top of the needle valve with your mouth, and as you press the needle upwards it should stop the airflow. The needle valve should not "stick" when released. Ultimately the newer one should be fine even though its a different "style" -- you just need to verify that the amount of fuel in the bowl (the "float") is within specs for your carb. The float should raise up to shut off the needle valve.
Nothing wrong with using the original one as long as you verify it works, and doesn't stick. It's literally as simple as unscrewing one and screwing a new one in. Don't over-tighten. |
I know its simple but I don't know where it goes and I have no tools. I'm an awful VW owner but I have been reading the books and looking at other people restoring their cars, this is a big project for me and I am looking for mechanics in my area.
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xyzzy
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| Posted: Tue Jul 24, 2018 10:49 am Post subject: Re: 1968 VW BUS Carburetor Rebuild gone wrong? |
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| MystixVintageCruisn wrote: |
I know its simple but I don't know where it goes and I have no tools. I'm an awful VW owner but I have been reading the books and looking at other people restoring their cars, this is a big project for me and I am looking for mechanics in my area. |
You can do this. 4 screws, remove the lid over the bowl. 14mm socket, remove the needle valve.
Once you've changed the needle valve, put the gasket back on, attach the lid -- do not over tighten the crews, just snug so there's no leaks. Then hook up a fuel line to a funnel and connect it to the brass fuel input, pour fuel into the funnel. This will fill up the bowl until the float rises to shut off the needle valve.
Remove your fuel line and funnel. Remove the 4 screws on the lid again. Remove the gasket, then measure the level of the fuel in the bowl. You measure from the top edge of the base, to the fuel level.
This is a different carb, but you get the idea:
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Tram
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| Posted: Tue Jul 24, 2018 11:45 am Post subject: Re: 1968 VW BUS Carburetor Rebuild gone wrong? |
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| xyzzy wrote: |
| MystixVintageCruisn wrote: |
I know its simple but I don't know where it goes and I have no tools. I'm an awful VW owner but I have been reading the books and looking at other people restoring their cars, this is a big project for me and I am looking for mechanics in my area. |
You can do this. 4 screws, remove the lid over the bowl. 14mm socket, remove the needle valve.
Once you've changed the needle valve, put the gasket back on, attach the lid -- do not over tighten the crews, just snug so there's no leaks. Then hook up a fuel line to a funnel and connect it to the brass fuel input, pour fuel into the funnel. This will fill up the bowl until the float rises to shut off the needle valve.
Remove your fuel line and funnel. Remove the 4 screws on the lid again. Remove the gasket, then measure the level of the fuel in the bowl. You measure from the top edge of the base, to the fuel level.
This is a different carb, but you get the idea:
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Five screws. Don't forget the one at the front that looks just like the other 4! Unhook the return spring, too.
Note that the little arched plastic retainer needs to go with the arch toward the body of the carb, not towards the float.
PS: I haven't seen one of those conversions in decades! 
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MystixVintageCruisn
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Location: Florida
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| Posted: Tue Jul 24, 2018 5:28 pm Post subject: Re: 1968 VW BUS Carburetor Rebuild gone wrong? |
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Thank you guys so much for being patient with me. I really feel more confident and less helpless. I'm towing it to my uncles shop since he has tools there and if my mechanic doesn't show up I'm going to attempt this on my own. Thank you so much guys! 
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aeromech
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| Posted: Tue Jul 24, 2018 5:40 pm Post subject: Re: 1968 VW BUS Carburetor Rebuild gone wrong? |
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To each his own but I’ve never heard of a mixed female. I’ve have known some mixed up females though.
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skills@eurocarsplus
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| Posted: Tue Jul 24, 2018 5:45 pm Post subject: Re: 1968 VW BUS Carburetor Rebuild gone wrong? |
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| MystixVintageCruisn wrote: |
| Hey everyone, I've stayed off these forums due to a lot of drama that my van and I have cause but everyone seems to keep referring me here so here I am again. |
never heard of you...and I'm like fly shit (everywhere)
honestly, just send the carb to the volksbitz guy. open wallet and be done with it
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aeromech
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| Posted: Tue Jul 24, 2018 5:49 pm Post subject: Re: 1968 VW BUS Carburetor Rebuild gone wrong? |
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Money well spent at Volkzbitz. One and done.
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busdaddy
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| Posted: Tue Jul 24, 2018 5:54 pm Post subject: Re: 1968 VW BUS Carburetor Rebuild gone wrong? |
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X3, Volkzbitz is the answer.
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blue72beetle
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| Posted: Tue Jul 24, 2018 6:27 pm Post subject: Re: 1968 VW BUS Carburetor Rebuild gone wrong? |
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Those Phoenix Vans look like something out of Total Recall. Are they hot? They look like they'd be hot in the summer.
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telford dorr
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| Posted: Tue Jul 24, 2018 10:01 pm Post subject: Re: 1968 VW BUS Carburetor Rebuild gone wrong? |
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| Quote: |
| it seems like ... replaced the (needle valve) with (a new one) which is fine but it's not the same as factory and doesn't extend all the way therefore it doesn't work.. |
There seems to be a rash of this happening these days. Like, what the hell is going on with rebuild kits? They seem to be just shoving random parts in boxes and passing them off as "rebuild kits". Of the several carbs I've looked at lately, not one needle valve - not one - was the correct part! ONE SIZE DOES NOT FIT ALL!
Word(s) to the wise:
(1) Save all old parts in a labeled bag. Just because a part isn't new doesn't mean it's no good. In fact, even used it may be better than the "new" part in the kit. Some day in the future you may be glad you kept it, as "new" becomes "no longer available". If nothing else, at least you'll know what the correct part looks like...
(2) Check EVERYTHING! Especially fuel height - it's critical for proper operation. Also check gasket thicknesses. Some new gaskets are super thick. While this may seem to make up for the warped, overtorqued carb body castings - nah - skip that - it won't. File / sand / otherwise flatten all mating carb body flanges until they fit perfectly (no light showing between surfaces).
(3) DON'T OVERTIGHTEN! Carb bodies are aluminum or pot metal - not strong steel. They strip threads, warp and otherwise bend easily. More "tight" won't fix a gas leak (but careful repair and optimization of the fit will). Snug is good enough!
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