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Carb Problem #748160
May 08th 2019 8:27 am
May 08th 2019 8:27 am
Joined: Jan 2001
Posts: 2,268
East Brady, PA
M
Meanmachine Offline OP
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Meanmachine  Offline OP
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Joined: Jan 2001
Posts: 2,268
East Brady, PA
I have a 1976 with 318. I have owned since 1980 and nothing has ever been done to the carburetor. The van has become hard to start after driving and the engine is hot. After a few days setting in the garage, I usually have to try 3 or 4 times before it fires up, but I think that is just the gas evaporating in the bowl. After driving when hot, after it starts up, I also get a smell of gas. The van runs good on the open road, other than it has lost a bit of power over the years. I might add I know nothing about the inner workings of a carb. An old-timer at the local garage told me it is probably a Carter carb, I know it is 2-barrel. He said the problem is probably the float is a fiber or plastic and has become saturated over the years. Could the timing be part of the problem. I also have the original fuel pump. Thinking about replacing that, I have 102,000 miles on the van.

Re: Carb Problem [Re: Meanmachine] #748232
May 09th 2019 6:54 pm
May 09th 2019 6:54 pm
Joined: Jan 2014
Posts: 582
Staunton, VA
kursed Offline
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kursed  Offline
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Joined: Jan 2014
Posts: 582
Staunton, VA
Time for a rebuild. If you were closer to me, I would clean it up for ya. Find a reputable carb rebuilder, they will put all new parts in it including the floats, and clean it out really good for you.


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Re: Carb Problem [Re: Meanmachine] #748234
May 09th 2019 7:11 pm
May 09th 2019 7:11 pm
Joined: May 2019
Posts: 33
Orlando,Florida
Itszeorangesoda Offline
newbie
Itszeorangesoda  Offline
newbie
Joined: May 2019
Posts: 33
Orlando,Florida
The Carter 2 barrel is easy to rebuild. I can give you the autozone part number for a kit with new check balls and gaskets. It even comes with a new float needle. It wasn't more than 30 bucks.

Re: Carb Problem [Re: Meanmachine] #748235
May 09th 2019 7:36 pm
May 09th 2019 7:36 pm
Joined: Aug 2001
Posts: 12,046
Fircrest, WA
Reed Offline
Maniac
Reed  Offline
Maniac
Joined: Aug 2001
Posts: 12,046
Fircrest, WA
Carter BBD. There is a good chance that the base plate has worn around the throttle shaft and created an air leak. You can get a kit to bush the shaft and cure the leak for about $40.


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Re: Carb Problem [Re: Meanmachine] #748236
May 09th 2019 8:07 pm
May 09th 2019 8:07 pm
Joined: Jan 2001
Posts: 2,268
East Brady, PA
M
Meanmachine Offline OP
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Meanmachine  Offline OP
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Joined: Jan 2001
Posts: 2,268
East Brady, PA
Reed, if I spray ether or carb cleaner around the throttle shaft will it detect the leak. I have read about spraying around the vacuum lines to detect a leak. I looked up in my parts books today and it appears the carb is a Carter BBD.

Re: Carb Problem [Re: Meanmachine] #748237
May 09th 2019 9:39 pm
May 09th 2019 9:39 pm
Joined: Aug 2001
Posts: 12,046
Fircrest, WA
Reed Offline
Maniac
Reed  Offline
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Joined: Aug 2001
Posts: 12,046
Fircrest, WA
It is possible that spraying carb cleaner will show the leak. Easier to just move the throttle shaft and see if there is any play.

Here is the bushing kit: CLICK ME

I have a couple spare BBDs in my garage. Let me know if you need one or some parts.

Last edited by Reed; May 09th 2019 9:41 pm.

Windows- they're what make a van worth owning!
Re: Carb Problem [Re: Meanmachine] #749327
June 06th 2019 7:31 pm
June 06th 2019 7:31 pm
Joined: Jan 2001
Posts: 2,268
East Brady, PA
M
Meanmachine Offline OP
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Meanmachine  Offline OP
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Joined: Jan 2001
Posts: 2,268
East Brady, PA
I talked to a guy today who worked at a Dodge dealership all his life and rebuilt many 70's carbs. He is in his 80s now and said he is to old to mess with a rebuild, he said the BBD was a bad carb from production. He said he would recommend just getting an Edelbrock or Holley and put on the van. He also mentioned the charcoal canister could be part of the gas smell.

Re: Carb Problem [Re: Meanmachine] #749333
June 06th 2019 11:08 pm
June 06th 2019 11:08 pm
Joined: Aug 2001
Posts: 12,046
Fircrest, WA
Reed Offline
Maniac
Reed  Offline
Maniac
Joined: Aug 2001
Posts: 12,046
Fircrest, WA
Well, I strongly disagree. I am half his age but have been messing with BBDs for the last 20 years. Loads of rebuilds. It is a very simple and good carb, in my opinion. He might be thinking of the BBDs that were put on Jeeps in the 80s. THOSE were a faulty design and should be avoided.

The charcoal cannister is what STOPS the gas smell by absorbing the fuel vaoprs that evaporate out of the fuel bowl on the carb when the engine is shut down. You can get Edelbrock and Holley carbs with bowl vents to keep the charcoal cannister funcitonal if you want.

Last edited by Reed; June 07th 2019 11:52 am.

Windows- they're what make a van worth owning!
Re: Carb Problem [Re: Meanmachine] #750580
July 13th 2019 12:13 pm
July 13th 2019 12:13 pm
Joined: Jan 2001
Posts: 2,268
East Brady, PA
M
Meanmachine Offline OP
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Meanmachine  Offline OP
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Joined: Jan 2001
Posts: 2,268
East Brady, PA
Finally found an older mechanic who said he will take a look at the carb. I was replacing some of the vacuum hoses today and was looking for the ID tag on the carb. I see the numbers stamped 0-2425 on the right side and 6-2138 stamped below the throat on the carb. Would one of these numbers be the model?

Re: Carb Problem [Re: Meanmachine] #750582
July 13th 2019 1:43 pm
July 13th 2019 1:43 pm
Joined: Aug 2001
Posts: 12,046
Fircrest, WA
Reed Offline
Maniac
Reed  Offline
Maniac
Joined: Aug 2001
Posts: 12,046
Fircrest, WA
No. The model is "Carter BBD." What you would be looking for, if it was still there, is a little red or green stamped tin tag that was put on one of the screws that holds the air horn to the main carb body. Finding these tags is a VERY rare event these days as they were very thin and usually broke off or were discarded the first time the carb was rebuilt.

All you have to do is make sure you use gaskets that match the holes in the carb body.

A 1976 BBD will have a brass float, but a failing float will not cause the problems you describe.

BBD repair and operation manual can be downloaded for free HERE.

Last edited by Reed; July 13th 2019 1:44 pm.

Windows- they're what make a van worth owning!
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