Six Pack issues and rebuilding

[Chryco Psycho]

The MSD coils can leak mounted horizontally unless u use the vibration coil . The 6 Pack basically requires it mount horizontally though

[tommyg29]

Can someone take a look at my hose hookups. This is a picture from years ago when I purchased the car, and Ive cleaned it up a lot since then, but this picture is the best I have that shows where I have the pcv connected, and the bowl vent hose (back to the case). I also have the hose that runs from the brake booster to the rear of the intake manifold, and finally the secondaries connected with the main. The main has one other tube that is capped.
Is this right? Want to make sure nothing here is contributing to my white smoke problems.

[DocMel]

I might b wrong, but 7 pds sounds a little high  Dial down to about 5.5 pds and see what happens

[tommyg29]

 

I spent most of the day working on it today, and changed the oil twice, so that makes 4 times total. I hate throwing away perfectly good oil after only a few minutes.
Every time I run the motor the crankcase fills with at least a couple quarts of gas. I have no idea where its coming from but it MUST be just running down the manifold because #8 keeps hydrolocking.
The floats are adjusted well and shutting properly.
I think I have tried virtually every trick or advice given here and Im just stumped
Car has been sitting in the garage for over 6 months now and it deserves to have someone enjoying it, but
If tomorrow doesnt go better Im calling it quits

PS
If nothing else at least Im no longer hesitant to work on the six pack, and though Im not saving anything on car insurance, I can pull the whole setup in 15 minutes now.

[Strawdawg]

Mechanical pump?  If so, disconnect the inlet line from the pump so it cannot get any gas from the tank.   Now you have no gas going into the carbs.  Fill the bowls of the carbs thru the vent tubes.  Crank the engine and see how it runs until the bowls, or center bowl, runs out of gas.

Steve

[tommyg29]

electric pump

[Strawdawg]

Okay,then, two ways to get that much gas into the crankcase.  Gas going past the needle valves and flooding the engine or a pressurized vent line pushing gas back into a carb.

Being sure you have 5-6 psi of fuel pressure, you should be able to see gas pouring into the engine when you look down the carb or carbs.

If you have a vent line connected, I am sure you have removed it and plugged it already.

What I don't understand is why you don't have black smoke boiling out the pipes when you start it.  Also, why does only one cylinder hydrolocking?

If you pull that plug and catch the liquid that comes out when you turn the engine over, is it pure gas?

Steve

[tommyg29]

I should say that Moparjack gave me the idea to remove the center carb and see what comes out of it, and sure enough I set it in a metal tray and fuel comes flooding out the bottom from somewhere in the bore area, but I havent been able to zero in exactly where or why. You can see the gasket above is soaked.
This is with only the fuel pump on, no starting or pumping the throttle or anything. ONLY turning on the fuel pump.
Obviously fuel should not be dumping out, especially a LOT. The float bowl fills, but only up to about the bottom of the sight plug hole where I have it set, and I assume the inlet valve is shutting off when it reaches that level, because it doesnt spill out, but how is it not coming out the open sight hole but pouring through the bores?
I know Im close. Maybe I just have the wrong gaskets installed?
How do you know? The kit is what it is 
Also, it goes into #8 because the rear of the manifold probably sits nearly an inch lower than the front. Its just flowing downhill, and I noticed it keeps pouring out for at least 5-10 seconds after you shut it off, probably at least a cup, maybe more in just those few seconds

[Strawdawg]

Ok, then you know where the problem is but not what/why. That's progress!  Don't put it back on until you solve the leak.  Save a lot of oil that way.

I don't have a six pack book.  Are there any pressed in plugs that could let the gas drain out of the bowls into the carb?  A crack in the valve body? A missing check ball?  Blown out power valve? If it has one....

You might Google and see if you can find the page from the six pack book that shows the carb blow up.

Don't get frustrated, you have made some good progress




Steve

[Strawdawg]

http://www.chicagocarburetor.com/carburetor-parts.php?c=2354

Steve

[Strawdawg]

Looks just like a four barrel to me

http://www.wwnboa.org/h2300r.htm

Steve

[tommyg29]

Thanks strawdawg, but I have already checked those sites. In fact I have the wingedwarrior site listed as a favorite and have studied it at least 20 times over the last 6 months, since the problem started. Rebuilt these carbs once, and then replaced the outboards with used, then rebuilt them, and then replaced several of those float bowls, etc etc.
Dont see any cracks, but how can you tell if the power valve is working?
Gotta be something to do with the metering block or gaskets? Idle screws?

[Strawdawg]

It seems to be a flat out leak and not a seep.

You can suck on the pv and see if it pulls the plunger in. . If it does not move,  it would appear to have a tear in the diaphragm. You would also suck air thru the tear.

There must be a major leak thru the metering block into the body to leak as you describe.  If you hold it up, open the butterflies,  and look into the body,  can you see where the fuel is coming out at?

[Chryco Psycho]

Fuel could be overflowing the booster height & flooding through the boosters , it could also be coming though the powervalve if the diaphragm is failed , if you suck on the back of the PV away from the spring it should sty closed until you relese the vacuum then the spring will pop it open , if the vacuum will not hold it close the PV is bad . it look like you have the correct gasket in there .
 make sure the fuel pressure 6 psi or lower so it is not sinking the floats & over filling the bowl although if it is at the bottom of the sight plugs I doubt it is.

[mopar jack]

Most likely coming from the power valve. Either the diaphragm is bad or the pv gasket isn't set properly. There is a hole in the main body that pulls vacuum on the pv and if fuel gets past the pv it will run into the manifold.