[T3] 71 squareback fi problem/question

[Jim Adney]

On 25 Aug 2017 at 19:58, Birtalan, Victor wrote:

> Hello/all:  feedback on my 71 squareback fuel problem.  the root cause
> of the symptoms that I had described is due to worn brushes in the fuel
> pump. 

I've rebuilt a lot of our fuel pumps, and worn out brushes are uncommon. In 
my experience, worn brushes (and worn commutators) are always caused by 
abrasive dirt in the gas. The dirt gets in there when there's a broken overflow 
hose that's not dealt with. Wheel spray throws water and dirt up into the 
cracks in that hose. This causes multiple problems, of which the pump motor 
is just one.  

The vast majority of the 40 year old pump motors that I take apart show only 
minor wear to the brushes and commutator. They were very nicely designed.

I make and sell a kit to repair the overflow hoses which are all broken by 
now. This keeps water and dirt out of the fuel system and keeps the gas from 
leaking out on left turns or when trying to top up the tank. It's cheap, 
effective, and lasts longer than the original hoses ever did.

If you're interested in a overflow kit, there was a mid year change in '71. 
Look in your "Frunk" and tell me whether the ~3/16" tube running across the 
top rear of the frunk is metal or plastic. Then I can tell you the price of the kit 
for your car.

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Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
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