Urrea 2338 Manual De Usuario página 7

With key off, put bleed-off tubing in a fuel
can and press bleed-off valve. If your tester
has no bleed-off valve assembly, wrap rags
around connections and release slowly. (A
bleed-off assembly can be purchased from
your tool distributor.)
15. Remove tester and reconnect all lines.
16. Start engine and check for leaks.
17. Remove fuel from all hoses. If fuel
remains in gauge hose assembly, connect
the smallest banjo bolt adapter into the
quick coupler over a fuel container.
Hold gauge above hose and fuel will flow
into the fuel can.
GUIDE GM TBI
Basic Instructions for Testing GM TBI
1. Relieve fuel system pressure.
2. Remove air cleaner assembly.
3. Temporarily plug the Thermac vacuum
port on the throttle body.
4. Using the adapters we supply, install the
tester in line between the fuel filter and the
throttle body (diagram C).
If longer pieces of 3/8˝ hose are needed, cut
from 3/8˝ fuel line. Use hose clamps on hose.
In some instances, the adapters may have to
be piggy-backed in order to get the right
combination of threads to connect (see
diagram D below).
5. If steel tubing is removed, use two
wrenches to prevent damage.
6. On some cars, it is easier to put the car on
a lift and test from underneath.
7. On some cars with GM TBI systems, it is
hard to install adapters.With the adapters
and tubing furnished, many combinations
can be made to help you.
8. Reactivate fuel pump, start the engine
and check for leaks.
9. When fuel pressure has stabilized after a
minute or so, gauge should read 9–13 PSI
(62–90 kPa), (.6–.9 bar), and (.63–.91 Kg/
cm2).
10. Deactivate fuel pump, and relieve fuel
system pressure.With key off, put bleed-
off tubing in a fuel can and press bleed-off
valve. If your tester has no bleed-off valve
assembly, wrap rags around connections and
release slowly. (A bleed-off assembly can be
purchased from your tool distributor.)
11. Remove tester and reconnect all lines.
12. Start engine and check for leaks.
13. Remove fuel from all hoses. If fuel
remains in gauge hose assembly, connect
the smallest banjo bolt adapter into the
quick coupler over a fuel container. Hold
gauge above hose and fuel will flow into
the fuel can.
14. Remove the plug from the Thermac and
replace air cleaner.
E N G L I S H
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