Idiomas disponibles
Idiomas disponibles
E N G L I S H
container.With fuel pump operating, bleed
until air is removed.
(c.) If your tester has none of the above,
position the gauge downward as far as the
hoses will allow with the gauge below the
hoses and control valve. Operate fuel pump
with engine off. Open and close the control
valve at least 5 times with the valve in the
"off" and "on" position, at least 12 seconds.
8. When pressure stabilizes, read the gauge.
If the Cold Control Pressure is not correct,
the warm-up regulator may be at fault.
9. If pressure is okay, run other pressure
checks.
(a.) Warm Control Pressure and Rest Pressure
must be measured with the engine warm.
(b.) Primary Pressure can be measured with
the engine cold or warm.
10.
(a.) If pressures are not within the normal
range on the Warm Control Pressure test,
try adjusting the fuel pressure regulator. If
it cannot be adjusted to normal pressures,
replace it unless the problem is as below (b.).
(b.) If the pressure is low with the engine
running and at idle, check to see if the voltage
is at least 11.5 V at the warm-up regulator
plug contacts. If full voltage is available at the
plug, then the warm-up regulator may need
replacing.
6
11. If the pressure is too low, test the
fuel pump volume. Also, there may be a
blockage in the supply line or leakage in the
return line. If the system has none of these,
the fuel system pressure needs adjustment.
Consult
the
factory
procedure.
12. If Rest Pressure drops too quickly, check
for leaks at o-rings and fuel line connections.
If no external leaks, check for a leaking cold
start valve or fuel injectors.
If still no leaks there, leakage may be at
the fuel pump check valve or at the o-ring
on the relief valve in the fuel distributor.
Repair or replace.
13. If no problems can be found in the fuel
injection system through pressure testing,
fuel pump should be checked.
For this, your tester should have a bleed-off
valve and tubing.
(If you do not have one, it can be purchased
from your tool distributor.)
With gauge hooked up to pressure test, put
bleed-off tube into a fuel container of at
least 2 quarts or 2 liters.
Fuel flow in 30 seconds should be 1.5–2.0
pints or 3/4–1 liter.Turbo cars may have a
volume of 20–25% more than non-turbo.
14. Deactivate fuel pump and relieve fuel
system pressure.
manual
for
the
