Pig rich mixture at idle 2 x 4 Gen 2 hemi

[moparedtn]

Maybe post #47 will answer your question.
How ya doing Ed

I understand there's ways for that reading to have been created...but am I at least correct in my
assertation of it, as I asked?

Oh, doc gave me the all clear on the surgery last week and I don't have to go back anymore, thanks.
How about yourself, sir?

 

[Fran Blacker]

Oh, doc gave me the all clear on the surgery last week and I don't have to go back anymore, thanks.

 

[khryslerkid]

I understand there's ways for that reading to have been created...but am I at least correct in my
assertation of it, as I asked?

Oh, doc gave me the all clear on the surgery last week and I don't have to go back anymore, thanks.
How about yourself, sir?

Same here, Doc said there's no restrictions. I'm about 95%.

I understand your question but the op has bigger problems to solve before he can start relying on those readings. And like Doug stated, there's too much "open air" at that location without any exhaust system past that point.

 

[440+6]

This is all very interesting to me, my experiences is with tri carb. six pack, 6 Barrel stuff.
Kind of similar experience I couldn't get enough air into the carbs with the cam I had.
I was always in the transition circuit.
I did drill holes in my primary plates and that really helped 100% but then I decided to go with the milder cam actually a mr 6 six pack cam, and I replaced my base plate with the stock one and I never had a car run or idle is good as I have right now.
I am interested, and following..........

 

[Fran Blacker]

Beekeeper hope your don't mind adding this to thread.
How do you clean fouled spark plugs? Seen on youtube take a propane torch and burn off deposits. Good bad or ugly. Other methods ?

 

[Beekeeper]

I'd shoot for 4-5 lbs.

If you have fuel pooled like that in the heads, it's definitely a flooding condition.

What pump are you running?

Edelbrock mechanical pump rated 6 psi maximum

 

[Beekeeper]

Is it practical to setup a gravity fuel supply to carbs? Fuel regulators will come just after you set it up, guaranteed !

I could setup a gravity flow tank fairly easy I guess.

 

[pnora]

I could setup a gravity flow tank fairly easy I guess.

You could put a tee in the line before the carbs and direct it back to the fuel cell. You could control the return with a ball valve in that line. That should knock down the pressure to see if that is the problem.

 

[Beekeeper]

I could give it a shot I do currently have a return on it. Well I have the OEM vapor separator
on it with the return back to the fuel cell.

 

[pnora]

I could give it a shot I do currently have a return on it. Well I have the OEM vapor separator
on it with the return back to the fuel cell.

That separator is metered/restricted as I recall on its return.. You need more volume on the return to
be able to lower the pressure.

 

[Beekeeper]

Yea it has i think a .060 orifice. I will connect a return with ball valve back to the cell that’s a great idea I should be able to regulate it that way.

 

[pnora]

Yea it has i think a .060 orifice. I will connect a return with ball valve back to the cell that’s a great idea I should be able to regulate it that way.

Simple and cheap. At least then you will know if fuel pressure is your problem. If it is not no sense wasting money on regulators and plumbing.

 

[Beekeeper]

Well tee’d the pcv to both carbs anyone see anything wrong with doing it this way?
Next i’m gonna tee off the fuel line after the pump and do a temporary return back with a ball valve to regulate the fuel pressure down to 5 psi.

 

[Beekeeper]

@dvw where would you recommend starting with the idle fuel mixture screws from seated?

 

[pnora]

Well tee’d the pcv to both carbs anyone see anything wrong with doing it this way?
Next i’m gonna tee off the fuel line after the pump and do a temporary return back with a ball valve to regulate the fuel pressure down to 5 psi.
View attachment 1223823

I would of plugged the PCV off for now and see if it would run.

 

[Hemirunner]

Well tee’d the pcv to both carbs anyone see anything wrong with doing it this way?
Next i’m gonna tee off the fuel line after the pump and do a temporary return back with a ball valve to regulate the fuel pressure down to 5 psi.
View attachment 1223823

You’ve got an “open loop” created with the PCV because the breather on the other VC is open. I wondered about that and posting the picture confirms it. That’s two huge vacuum leaks.

 

[Beekeeper]

I would of plugged the PCV off for now and see if it would run.

I have ran it before with both plugged I can do that for now but what about a PCV how does one go about that with dual carbs?

 

[Hemirunner]

I have ran it before with both plugged I can do that for now but what about a PCV how does one go about that with dual carbs?

How you have it is fine, but you’ll need to have the breather hose to the air cleaner on it when running. As already recommended. Cap both at the carb until you have the base idle issues sorted out.

 

[AR67GTX]

The PVC hose plugs into the rear carb only on the back side. Very common to have an open breather and pvc valve. It’s pulling air through the crankcase not the intake track. My 66 Hemi has an open breather. Some models had the breather hooked by a hose to the air cleaner and pulled air through from there. Basically the same thing except the air pulled in is filtered.

 

[Hemirunner]

The PVC hose plugs into the rear carb only on the back side. Very common to have an open breather and pvc valve. It’s pulling air through the crankcase not the intake track. My 66 Hemi has an open breather. Some models had the breather hooked by a hose to the air cleaner and pulled air through from there. Basically the same thing except the air pulled in is filtered.

Pulling air is still a vacuum leak. When you hook the hose to the air cleaner, it’s applying vacuum to a closed system, albeit it’s now pulling from both sides.