MGB & GT Forum
Is something hooked up wrong???
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I was looking for the source of a small oil leak on my 1974 MGB roadster and noticed a “nipple” on the rear carburetor that had nothing attached. In trying to figure it out myself it seems it is the float vent and the vent line is attached to a fuel connection. This does not make sense, what am I missing? I attached a couple of pictures, hopefully they help.
1974 MGB
“I’m not arguing…I’m just explaining why I’m right.”
“A man should not allow his ambition to exceed his overall worth.”
Price is what you pay. Value is what you get." - Warren Buffett
It's never paid to bet against America. We come through things, but it's not always a smooth ride." - Warren Buffett
1974 MGB
“I’m not arguing…I’m just explaining why I’m right.”
“A man should not allow his ambition to exceed his overall worth.”
Price is what you pay. Value is what you get." - Warren Buffett
It's never paid to bet against America. We come through things, but it's not always a smooth ride." - Warren Buffett
Attachments:
IMG_0528.jpg 37.5 KB
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Apr 30, 2024 08:28 PM
Top Contributor
 Joined 17 years ago
5,583 Posts
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Maybe these images will help
Oil leak?? What oil leak? That puddle under the car is just sweat from all that horsepower!!
Law of Mechanical Repair - After your hands become coated with grease, your nose will itch and you'll have to pee.
Oil leak?? What oil leak? That puddle under the car is just sweat from all that horsepower!!
Law of Mechanical Repair - After your hands become coated with grease, your nose will itch and you'll have to pee.
Attachments:
Carbs 1.jpg 70.5 KB
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Apr 30, 2024 09:17 PM
Top Contributor
Joined 8 years ago
6,284 Posts
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Carl
I copied this picture off another thread as it shows the connections well. Bruce (riley1489) provided this picture as he does frequently, and it shows how yours should be. The hard line connects the two carburetor float bowl vents and there is a “tee” in the line towards the rear that would then go to the evap canister. From looking at your photo, I wonder if the hard line shown is incorrectly connected to the fuel inlet?
I was addicted to the hokey pokey but I turned myself around.
prop-a-gan-da: When a British person takes a close look at something
Edited 1 time(s). Last edit at 2024-04-30 09:19 PM by OldDuffer.
I copied this picture off another thread as it shows the connections well. Bruce (riley1489) provided this picture as he does frequently, and it shows how yours should be. The hard line connects the two carburetor float bowl vents and there is a “tee” in the line towards the rear that would then go to the evap canister. From looking at your photo, I wonder if the hard line shown is incorrectly connected to the fuel inlet?
I was addicted to the hokey pokey but I turned myself around.
prop-a-gan-da: When a British person takes a close look at something
Edited 1 time(s). Last edit at 2024-04-30 09:19 PM by OldDuffer.
Attachments:
IMG_0180.jpeg 44.8 KB
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Apr 30, 2024 09:54 PM
Top Contributor
Joined 21 years ago
5,546 Posts
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It looks like you have the vent hose to the charcoal canister connected to the end of the throttle shaft. Move it over to the open tube.
Here's my 'before' picture of that area.
Edited 1 time(s). Last edit at 2024-04-30 10:23 PM by PaulP.
Here's my 'before' picture of that area.
Edited 1 time(s). Last edit at 2024-04-30 10:23 PM by PaulP.
Attachments:
DSCN4437.JPG 66.5 KB
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John and all, I haven’t gone out to actually look but I think the vent hose is connected to the throttle spindle shaft!! 
if this correct, that maybe why I’m getting a fuel odor once in a while, the vent line is not connected.
I maybe all wet but I hope not, any of you have an opinion?
1974 MGB
“I’m not arguing…I’m just explaining why I’m right.”
“A man should not allow his ambition to exceed his overall worth.”
Price is what you pay. Value is what you get." - Warren Buffett
It's never paid to bet against America. We come through things, but it's not always a smooth ride." - Warren Buffett
if this correct, that maybe why I’m getting a fuel odor once in a while, the vent line is not connected.
I maybe all wet but I hope not, any of you have an opinion?
1974 MGB
“I’m not arguing…I’m just explaining why I’m right.”
“A man should not allow his ambition to exceed his overall worth.”
Price is what you pay. Value is what you get." - Warren Buffett
It's never paid to bet against America. We come through things, but it's not always a smooth ride." - Warren Buffett
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