[alfa] Re: 164 fuel pressure check - leaking?

[Joe Elliott <jee@xxxxxxxxxxxxxx>]

At 12:41 AM +0000 6/16/04, alfa-digest wrote:
> What would be wrong if fuel pressure doesn't hold?  
> Pressure regulator or is there a check valve in fuel pump?
>
>
>
> Karl

Yes and yes.  Or injectors.  You can try to rule out the regulator by 
completely pinching off the fuel return line from the regulator and 
see if the pressure still falls.  Of course, if the problem is 
erratic, good luck.  Repeat the experiment, I guess.  Checking for a 
leaking injector is as easy as taking a plug out and sniffing for 
gasoline fumes after the pressure has dropped--trouble is it could be 
just one injector so you'd have to take 6 plugs in and out every time 
you test it.  I'm not familiar with the 164's fuel delivery system, 
but I'm sure there's at least one pump with at least one check valve 
in it--couldn't tell you how to test it though.

Good luck,
Joe
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