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i'm havin some problems with my 304, its only pulling 6 on the vacuum gauge, its blowing gas out of the #2 cylinder at the exhaust manifold, i have to set it at like 15 BTC to get it to run, its blowin grey smoke out the exhaust, and when i pulled the new plugs i just put in, they are covered in gas, like a strong smell, i just replaced the intake manifold gasket and rebuilt the holley, does anyone know if this is possibly valves or what, and y would it just start?
 

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bring the fuel air screws all the way out (lean on a holley I think?) and see if the engine still runs.
 

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Low vaccum Could be a intake leak. The flooding/excess fuel could be the float level is wrong or the needle and seat is not sealing at the carb fuel inlet.

Always start with easy stuff or the last thing you worked on, that's usually where the problem is.

Spray some carb cleaner at the intake and carb gaskets to see if it runs differently, if it does...there's your leak


Tap on the carb with a screwdriver handle where the fuel line goes in to dislodge any crap in the needle.
 
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