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 Post subject: Weird BBD problem
PostPosted: Fri Jan 28, 2022 2:14 pm 
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4 BBL ''Hyper-Pak''

Joined: Sun Aug 21, 2016 12:13 pm
Posts: 42
Location: Douglas GA
Car Model: 1966 Plymouth Valiant
Got a BBD sittin on the six for the moment. Can't get the son of a gun to run and idle right. Acts like its running ludicrously rich. When I disconnected my vacuum guage from the port closest to the right idle screw, gas leaks out.

My guess is that it is leaking internally. Thoughts? Any idea what would cause that? Or where from?


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 Post subject: Re: Weird BBD problem
PostPosted: Sat Jan 29, 2022 12:23 am 
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Joined: Thu Oct 17, 2002 7:27 pm
Posts: 13368
Location: Park Forest, Illinoisy
Car Model: 68 Valiant
Sounds like the float setting is way off.

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 Post subject: Re: Weird BBD problem
PostPosted: Sat Jan 29, 2022 11:40 am 
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EFI Slant 6

Joined: Sat Mar 19, 2016 7:25 pm
Posts: 286
Location: SW PA
Car Model:
Could need rebuild , needle & seat may be done. Float assy. may be heavy/taking on fuel & needs replaced. Or if somebody tried putting a new sealing washer on the fuel inlet needle/seat assy it could(prob.) be out of adj. The only other odd causes are too much fuel pressure, or fuel percolation from type(winter blend in summer) or excess manifold temp.


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