[T3] Fuel pump primer and pressure

[Jim Adney]

On 11 Sep 2011 at 17:15, Bryon Garvin wrote:

> I wanted to check my fuel pressure to make sure I wasn't running lean in
> that respect.  I have one of your primer switches.  Why doesn't running that
> switch with the engine off show 29 psi ... but when the engine is running, I
> do have 29?  With engine off, running the pump, I get 20.

It should read 29 both times. Are you doing this with 2 people so 
that you can press the button and read the gauge at the same time?

Compare the sound the pump makes when you press the button for one 
second with the sound it makes when you first turn the key ON. If the 
button produces a weaker sound, then maybe the switch has gone bad. 
Try wiggling the button to see if that makes any difference.

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