[T3] Mystery Fix (soaking fuel pump)

[Jim Adney]

On 31 Jan 2013 at 9:06, Bobsnotch at aol.com wrote:

> I had 2 here that did come back to life, but 1 lived for about 3 months,  
> and the other went 2 years. The most common thing I've found with trying to  
> use a dry stored pump, is that when they die, they don't make any fuel  
> pressure. Yes the pump will continue to run and make noise, but not make any  
> pressure, and no fuel pressure means the car won't run. 

That's the most common failure mode of these pumps, as they all get 
to be ~40 years old. There's a little rubber piece in there that 
turns hard and finally crumbles. 

The good news is that I can fix this with my cheaper Basic pump head 
rebuild. I replace that little rubber part with a piece of Teflon 
that I machine to size, then I replace the pump head O-rings and put 
everything back together with a new brass cap over the relief valve 
port. The end result is more durable than what the pumps were when 
new. The cost of this is $75 plus return shipping. It's a bargain.  

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