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Tue Nov 11, 2025 11:52 pm

74 super beetle 1600// the oil filler breather tube jiggles around and rattles. it is the portion that exits the bottom of the oil filler and goes down to the engine tins..is this something major? a major pita to fix or can i wrap metal tap around the tube where it goes through the engine tin and let it ride?

appreciate all the help on this!!

so far:
total rewire w/conversion from gen to alt
removed all egr and computer diagnostics wiring
new brake system front to rear w/disc brakes for front
new fuel system front to rear tank,lines,carb, pump, gage, cvr
new tires
carpet w rear seat area made into open area
lots of other things

Wed Nov 12, 2025 7:57 am

If I remember correctly if you take the oil cap off there is a large slotted fastener in there that could be loose.

Wed Nov 12, 2025 8:11 am

Bobs67vwagen wrote: If I remember correctly if you take the oil cap off there is a large slotted fastener in there that could be loose. That is the assembly. The tube is brazed to it.

Wed Nov 12, 2025 11:24 am

There is supposed to be a grommet, either plastic or rubber for the tube that passes thru the crank pulley tin.

The tube could have a cracked weld at the filler top also

Wed Nov 12, 2025 2:04 pm

#47
https://www.wolfsburgwest.com/cart/DetailsList.cfm?ID=111115491

Wed Nov 12, 2025 2:11 pm

A 74 shouldn't have the road draft pipe. It used a larger fitting and a short elbow shaped hose to the paper filter air cleaner. The oil collected was simply returned to the engine.

Wed Nov 12, 2025 2:55 pm

DrDarby wrote: A 74 shouldn't have the road draft pipe. It used a larger fitting and a short elbow shaped hose to the paper filter air cleaner. The oil collected was simply returned to the engine.
I thought so too, maybe very early 74?

Wed Nov 19, 2025 2:42 am

Unfortunately, the engine is not original and doesn't have a serial number. So i don't know the specific manufacture year.

I plugged the top opening of the filler tube where the hose is supposed to go to the carb.

i also plugged the opening on the aftermarket air filter where the hose from the filler neck is supposed to be attached.

I have tightened the filler neck! yay! Doesn't rattle!

i am ordering the seal that goes around the bottom of the breather tube where it goes through the engine and will replace it when it gets here.

Now my engine compartment doesn't have the slight oil residue AND the engine still breathes...what a concept!!

Wed Nov 19, 2025 11:42 am

Glad to hear you solved it. Was it the large slotted fitting inside the oil fill that was loose, or was it something else?

Wed Nov 19, 2025 4:35 pm

the slotted nut inside was loose. i need to find a illustrated parts catalog for bugs...lol

Wed Nov 19, 2025 5:13 pm

RUNWAY13 wrote: 74 super beetle 1600// the oil filler breather tube jiggles around and rattles. it is the portion that exits the bottom of the oil filler and goes down to the engine tins..is this something major? a major pita to fix or can i wrap metal tap around the tube where it goes through the engine tin and let it ride?

appreciate all the help on this!!

so far:
total rewire w/conversion from gen to alt
removed all egr and computer diagnostics wiring
new brake system front to rear w/disc brakes for front
new fuel system front to rear tank,lines,carb, pump, gage, cvr
new tires
carpet w rear seat area made into open area
lots of other things You need to tell us more precisely. "the oil filler breather tube jiggles around and rattles" The tube is part of the oil filler. So instead of the tube rattling around it was the filler assemble. Glade you got it figured out.