[alfa] RE: GTV6 fuel pressure

[Shures <shures@xxxxxxxxxxxx>]

Ryan,

I haven't done this on the GTV-6 but I think it is easily done.

To test other Bosch cars (SAAB specifically but others too) I purchased 
a ACRTON fuel pressure gauge at Sears for a reasonable price. You can 
find them online at various tool discounters.  The gauge attaches to a 
standard A/C schrader valve which I purchased from Granger at a cost of 
about $10 for a set of 4 or 6. For the SAAB/VW and I don't remember what 
other Bosch cars I got a banjo bolt, drilled and tapped it and installed 
a schrader valve.  To test, I remove a banjo bolt from the fuel manifold 
and replace it with my schrader valve/bolt and test away.  I do not 
leave the test tap in for long as it isn't the strongest part in the 
world; it might leak in continuous use.  To adapt the gauge to the GTV-6 
you either cut the hose on the gauge and install a T which I wont do 
because I want to keep the ability to use the gauge on other cars.  OR 
you purchase a Female T at Lowes (Brass of course) that will take a 
schrader valve in one port and buy two - 5/16" hose barbs in the other 
ports. You can install this between the cold start valve and the hose 
from the fuel manifold using a short (6"-8") piece of fuel line.  You 
can probably get away with 5/16" for testing, be sure to use the 7.5mm 
hose for anything permanent.  And the right clamps too.

I have a schrader valve or two if you or anyone else is interested.

Scott Shure
85 GTV-6
Scuderia Saab


> ate: Wed, 10 Sep 2003 14:26:43 -0400
> From: "Ryan Mottice" <tont032@domain.elided>
> Subject: [alfa] GTV6 fuel pressure
>
> Now that I've finally gotten some time to begin work on the '84...she won't 
> start.  I get a catch, a sorry attempt at an idle for all of maybe 2 seconds 
> and then kaput.  Subsequent attempts to start yield nothing, and even a 
> slight coaxing with the accelerator produces the plenum pop...no more of 
> that.  That being said, all my grounds are clean, double relay = good, fuel 
> filter is new, and the fuel pump actuates with the opening of the AFM.  As I 
> suspect she is running only on the cold start injector (hence the fire and 
> die)  I'd like to check the fuel pressure and the regulator (even though the 
> pump is turning on, it's efficiency is still in question)  How does one do 
> this?  I should know, but then again...I've never had to check before...  
> Any other suggestions?  Any and all input is greatly appreciated - thanks to 
> all.
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