Carb problem! Dumping gas into engine after it's shut off.

[jlex]

Bill:
I wish I had known about the shut off valve integrated in the square top fuel pump sooner.... I just put the VW away for the winter.
I'll be ordering one in the spring to replace the after-market pump currently on my generator equipped '70. Looking to cure the mildly annoying flooding I experience when parking the car on an incline. Read the reviews and have seen pictures of your work... very impressive! Will contact you in the spring. Thanks for the information!
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jlex.
'70 std. "Elsie"
'88 Carrera

[wcfvw69]

[Frodge]

[bobinphx]

I do apologize that I can not find a receipt or a number on the fuel filter. It was a from the warehouse at autoone, it was not something they stocked at my store. The filter has 1/4 inch barbs (a bit big) and was made of steel. I want to say it was a metal g1.. but dont hold me to that. I also recall that it filtered to 10 microns,,, maybe??? sorry about not having specifics.

[slalombuggy]

[ashman40]

[jlex]

Ashman:
Sounds like a solution, although I'm sold on just changing out my aftermarket pump for an original style one knowing there are good refurbished ones available. I should have gone back to original years ago.

Bill:
Thanks for uploading the picture of the '70 engine. Nice to see an unmolested example: throttle regulator intact and shield over the crank pulley nut! Missing those items although I'm running the original 30pict3 carb and original 205T distributor (both overhauled). Another nice feature on these '70 single ports was the rain tray to keep everything tidy... Save a good pump for me to buy in the Spring!
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jlex.
'70 std. "Elsie"
'88 Carrera

[JonRich55]

Ashman - That is an interesting observation. My 72 SB and my 73 SB had the rounded later model fuel pump that did not have the ant-siphoning ability the earlier pumps had, however I did have the inline round anti-siphoning item mentioned earlier in the thread.

I had never seen one of the inline one until I started working on my 72 SB (Original owner). I would make sense they started adding those on SBs for the reason you mention of having a higher tank mount position.

[jlex]

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jlex.
'70 std. "Elsie"
'88 Carrera

[wcfvw69]

[jlex]

Bill:
Thanks. I've tried to keep it as original as possible. Throttle positioner was taken off and left off when I had the carb rebushed. Also, I updated the coil simply as a preventative maintenance measure. Still have it around somewhere. Here's a pic of the car.
Was daughter driven a year in high school and four years in college. Got her a Honda for optometry school. She's out now and practicing so I'm now the caretaker.

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jlex.
'70 std. "Elsie"
'88 Carrera

[don.ville]

My 34 pict 3 had a hot carb flooding issue recently.

COLD engine:
Starts easy and idles great

HOT engine after 5 mins:
crank for 4 or more seconds before it would fire.

My float needle passed the sticking test when last checked.

I got a mirror and looked into the carb throat (I have a 67 bus), and saw fuel seeping down the carb throat.

I pinched the fuel line and the flooding seemed to stop.
Previously when i did this the flooding did not stop, but I changed out parts using a carb rebuild kit a few weeks back. Now in only floods when fuel line is not pinched.

I decided to just change the needle valve above the float, and it stopped the flooding and the engine starts the same, cold or hot.

Using my finger to see where the slight whistling noise was coming from during the flooding. (It sounded like a distant kettle just starting to boil)

I have a few carb to try parts from

So in my case it was the needle valve that looked good, but didn't operate the same when hot.
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67 Standard 11 window How I Keep My Bus Alive
04 Jetta TDI Page (SOLD)
01 Mexican Beetle Hello Kitty Rescue (SOLD)
29 Ford Model A Rat Rod (SOLD)
2015 Audi A8L TDI Quattro

[jlex]

I've ordered and received the Pierburg fuel pump from Bill .... it's a real beauty. Need to get the car out of storage so I can install it and see if it cures the uphill flooding situation.
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jlex.
'70 std. "Elsie"
'88 Carrera

[andrewvwclassic]

You guys may be overthinking it. If it leaks out leting a few drops out of the overflow tube that could just be gas condensation. When the bowl gets hot after a drive it will release some drops and smell because the fuel wants to boil. Totally normal. Now if it is to the point where you are flooding over maybe a big cause for concern. Buy a Toyota they will run perfect or swap to fuel injection. Lol

[don.ville]

[bnam]

I had flooding issues on 2 different cars/carbs (one a KG with a dual port 1600 and the other a Typ 3 with twin carbs). Both were caused by needle valve not closing fully. Replacing the valves stopped the issue.
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1971 1302LS Convertible (RHD) owned since '74
Click to view image
1965 Karmann Ghia Coupe - under restoration
1966 Fiat 1500 Cabrio (with 1600 Twin cam)
1952 Citroen TA 11BL

[vamram]

[andrewvwclassic]

[Ghiamansanantonio]

I have noticed that when I park on a hill where the nose is facing up the hill it dumps and doesn't stop but if I have the engine higher then the front of the car it wont do that. So maybe that's your answer.