Actron KAL2535 - Manual (Page 8)

CAUTION: Pressure could exceed 75 psi and may blow
apart any loose fittings or defective lines or
hoses. Observe the condition of fuel system
components before performing this test.
9. If pressures are acceptable, some manufacturers
also require a flow test. If so, open the fuel system
into a graduated plastic container and measure the
flow rate. Consult a service manual for the
acceptable flow rate. Close the fuel system.
10. Turn ignition off and observe the residual pressure.
Some manufacturers specify a minimum holding time.
11. In conjunction with an injector pulse tester, turn the
ignition on, observe fuel pressure, pulse one injector,
turn ignition off. Move injector pulse tester to next
injector and repeat test sequence. Continue test
procedure on remaining injectors.
CAUTION: Do not repeat this test more than the
manufacturer recommends. The engine may
become flooded, or the oil can become
contaminated.
12. Deactivate the fuel pump and relieve the system
pressure. With the ignition off, put the Test Gauge
bleed-off tube in a disposal container and press the
bleed valve on the hose.
1. Refer to Figure 1 , Typical Multi-Port Fuel Injection
System With Test Port. With engine off, locate fuel
pressure test port (Schrader valve) and attach the Test
Gauge. If no Test Port is provided, residual pressure
must be released before fuel system fittings are
loosened. Connect the Test Gauge to the access point
using the correct adapter. Always wrap a shop towel
around the fitting before loosening.
2. If the adapter you need is a banjo bolt adapter, ours
are designed for use with standard depth banjos. If
a car manufacturer uses a non-standard banjo, more
than one washer maybe needed on either or both
sides of the banjo. Our M12 x 1.25 banjo bolt
adapter may need one or more thick or thin washers
depending on the application.
3. Connect the Test Gauge into the system, and watch
the Gauge. Reactivate the fuel pump and start the
engine.
4. Fuel pressure should rise to slightly above operating
pressure and then stabilize at operating pressure,
per the manufacturer’s’ specifications.
5. Check for leaks and repair as required.
6. If engine will not start, check ignition system for
spark. If no ignition spark is present, refer to vehicle
service manual for No Start Diagnostics.
TYPICAL PORT FUEL INJECTION SYSTEM PRESSURE TEST
For TBI & Bosch C.I.S., see additional instructions
7