PDSIT carb issue at a loss

[Ossipon]

I am having continual frustration with my L (driver) 32 PDSIT carb.
Prior issue: Puking fuel, and thought it was a Balance tube connector issue. Fixed that and thought i was OK. Few days later, could tell it was same. Took off carb to overhaul. Found there was a couple of drops if fuel in the float. Ordered and received new float. Overhauled with new float in place.
NOW:
It is Spilling fuel irregularly from Float chamber vent with new float. So I installed old needle valve. No more fuel coming from Float chamber vent. But a continuous dribble from the discharge arm in the center.
All the holes from the pilot jet and Main jet appeared to be flowing freely when I overhauled. I am at a loss.
What would cause that continuous dribble when running. I would not think fuel pressure. That would have made sense with the Float chamber overflow. But replacing the needle valve with the old one appeared to fix it.
Help
_________________
Ossipon
--Two truths in life: Volkswagens Rust and everything will die at some point --

VWs in my life:
Air
Type 1 - 59, 62, 63, 71 Super 68 KGhia/ Type 2 - 59 Single Cab / Type 3 - 64 Notch
Water
GTI 83, Jetta 81, 85, 87, 91 TDI, 98 TDI, 09 / New Beetle 99 / SportWagen 05, 13 / Tiguan 18 / T3 92 /Taos 24... And don't about me and my experiences with my Dasher and Quantum

[Bobnotch]

Sounds like the float level is set wrong (too low).
_________________
Bob 65 Notch S with Sunroof
71 Notch ...aka Krunchy; build pics here;
http://www.thesamba.com/vw/forum/viewtopic.php?t=249390 -been busy working
64 T-34 Ghia...aka Wolfie, under construction... http://www.thesamba.com/vw/forum/viewtopic.php?t=412120

[Ossipon]

[luka32]

How do you set float level?

[Ossipon]

The way I did it.
I have this small plastic L shaped ruler I got with a carb rebuild kit a long time ago. I attempt to fill the reservoir without starting the engine. I remove the top five screws of the carb and lift off. I insert and set the ruler inside. The depth should be about 14-15 mm (Mine is 15 mm) I would change the washer on the needle valve (thicker or thinner) to change the depth.
The manual I have says 14-16 mm is the correct depth.
_________________
Ossipon
--Two truths in life: Volkswagens Rust and everything will die at some point --

VWs in my life:
Air
Type 1 - 59, 62, 63, 71 Super 68 KGhia/ Type 2 - 59 Single Cab / Type 3 - 64 Notch
Water
GTI 83, Jetta 81, 85, 87, 91 TDI, 98 TDI, 09 / New Beetle 99 / SportWagen 05, 13 / Tiguan 18 / T3 92 /Taos 24... And don't about me and my experiences with my Dasher and Quantum

[Ossipon]

Still no closer. Still a dribble from the discharge arm. I am about ready to take it completely off and blow out all the connections that go to the discharge point.
Here are some more things I see.
If I put the adapter cup over the barrel on each side and cover it with my hand.
Right side, good suction, and wants to stall quickly
Left side, good suction, but does not stall quickly Slows but does not stall.
I can also screw in the Volume control screw almost the entire way in (Less than a quarter turn, and not much change in idle speed.
I have read and searched the various diagnostic texts available. The closest I can find is the accelerator pump is allowing fuel passed continuously. This cause was the closest I can find to my symptoms. That is why I am ready to take it apart and see if that fixes it.
Any other ideas?
_________________
Ossipon
--Two truths in life: Volkswagens Rust and everything will die at some point --

VWs in my life:
Air
Type 1 - 59, 62, 63, 71 Super 68 KGhia/ Type 2 - 59 Single Cab / Type 3 - 64 Notch
Water
GTI 83, Jetta 81, 85, 87, 91 TDI, 98 TDI, 09 / New Beetle 99 / SportWagen 05, 13 / Tiguan 18 / T3 92 /Taos 24... And don't about me and my experiences with my Dasher and Quantum

[Bobnotch]

I'd probably tear it down and blow it out completely. At this point you have nothing to lose. Then double check your float settings, and check that the float doesn't sink (not unheard of).
_________________
Bob 65 Notch S with Sunroof
71 Notch ...aka Krunchy; build pics here;
http://www.thesamba.com/vw/forum/viewtopic.php?t=249390 -been busy working
64 T-34 Ghia...aka Wolfie, under construction... http://www.thesamba.com/vw/forum/viewtopic.php?t=412120

[luka32]

Hi, did you find the problem? I have similar problem with my carbs. Left one is missfireing and looks like flooding, spits fuel out of barrel when throttle is opened. If I disconect the idle jet, rpm drops very slowly, with right carb engine dies immediately. I can synchronize them, but it doesnt help much. I assume I have a leak somwhere around volume control, just cant find it. Took it apart three times, leveled contact surfaces, changed gaskets, ... car is 70 notchback so carbs have different jets.

[Ossipon]

I have been sidetracked and had hoped to resolve it this weekend. I may still have a chance. This is what I have been able to identify. Like yours, mine was misfiring a few months ago. I thought it was timing or Dwell. I now think it was a symptom like yours. I made sure my timing and dwell was accurate. And thought the misfire was gone.
My initial symptoms were identical to yours before changing the Float. Now it is only a small drip at idle, but it persists. These are the things I have done
Remove and overhaul the carb.
Replace the needle valve (2X)
Replace the bad float with new float
Verify the fill reservoir height of 15mm
Verify the fuel pressure. Approximately .2 Bar (3PSI) fuel pressure.
Verify no vacuum leaks. (each time I reinstalled the carb)

I am getting ready to::
Remove the carb one more time. Soak and blow the holes that service the output arm, Reinstall and test.
Your problem description sounds very similar to mine. If I were you I would first check for leaks using ether or similar around the
-Intake manifold connections
-Balance tube sleeve
-Bushings of the carb
It could also be your mating surfaces of the bottom plate and your carb body are slightly warped and cause a leak. The solution which I have not had to do is assure these surfaces are flat and no warped using 1000 grit sandpaper to smooth the surfaced.
Best of luck
_________________
Ossipon
--Two truths in life: Volkswagens Rust and everything will die at some point --

VWs in my life:
Air
Type 1 - 59, 62, 63, 71 Super 68 KGhia/ Type 2 - 59 Single Cab / Type 3 - 64 Notch
Water
GTI 83, Jetta 81, 85, 87, 91 TDI, 98 TDI, 09 / New Beetle 99 / SportWagen 05, 13 / Tiguan 18 / T3 92 /Taos 24... And don't about me and my experiences with my Dasher and Quantum

[luka32]

I made a litile progress. Changed lower throttle body, now missfires stopped. Volume control is alot more responsive, also it dies if i unplug idle jet. It still hesitates when throttle is floored, it is even worse when air filter is on.
I noticed I have different idle jets, one is 45, other is 50. Is this normal? If it is which si for what side? Jet chart has no info for my engine, every other is 50 both sides.

[papichuito]

I had similar trouble with mine a while back with spitting gas up. I came down on the air correction jet to 150 and 132.5 mainon the left and 150/130 on the right and it solved spitting gas upwards. Idle jets are 45s.
_________________
Jesus Roman

[Bobnotch]

[Bobnotch]

[luka32]

Here is the jet list
https://www.thesamba.com/vw/forum/viewtopic.php?t=540804

My carbs were factory jetted for 1970. I couldnt set them to run right.

I swaped carbs with another set, that appears to be 1964 R engine 1500s. Jets are way bigger and the same in both carbs. Now my engine runs ok.

[Ossipon]

Update, Life got in the way. So finally able to resolve this issue. Had been piddling with it for past three months.
It appears to be fixed. These are what I did to finally get it not to drip at idle or excess during acceleration from the output arm into the venturi.
+Took it completely apart and cleaned thoroughly for the Xth time.
+Blew out the passages and verified air flow.
+ Installed new pilot jet and correction jet with NO change from the original values. (45 to pilot jet and Air correction 120).
+Used the new Float valve that was already installed.
+Verified and tightened mounting bolts.
+ Verified the intake and carb mounts were without any potential debris

Started engine and viewed both carbs. Both are dry but Balance and idle were off. Adjusted idle and balance.
Verified timing. Verified Balance and idle again.
Now for the test drive. Appears to be OK in town. WIll check for Highway speeds this evening.
Summary of my guess to the cause. It was either:
One of the passages was clogged or partially blocked, resolved when cleaning.
Or The pilot jet was partially or fully blocked, resolved when replaced.
_________________
Ossipon
--Two truths in life: Volkswagens Rust and everything will die at some point --

VWs in my life:
Air
Type 1 - 59, 62, 63, 71 Super 68 KGhia/ Type 2 - 59 Single Cab / Type 3 - 64 Notch
Water
GTI 83, Jetta 81, 85, 87, 91 TDI, 98 TDI, 09 / New Beetle 99 / SportWagen 05, 13 / Tiguan 18 / T3 92 /Taos 24... And don't about me and my experiences with my Dasher and Quantum