Checking injector seal

Checking injector seal

If there is a fall in pressure beyond the above mentioned values, check the seal of the section of the system upstream of the manifold and, if there are no leaks or damage to the fuel supply pipe, replace the electric fuel pump assembly because, as described in the paragraph dealing with the electric pump, the pressure regulator is housed in the actual assembly and CANNOT be replaced.

If the pressure, after having repeated the check, exceeds the recommended figure and is considerably higher, replace the fuel pump because there are problems with the operation of the pressure regulator which it houses.

Checking injector seal

1. Complete electric pump
2. Fuel supply pipe
3. Adaptor (A)
4. Test equipment no. 1860955000
5. Adapator (B)
6. Fuel manifold
7. Rapid connector on the manifold
8. Injectors

Keep the test equipment as described in the previous paragraph, place valve (b) in the fully open position, keeping valve (c) closed and valve (a) in the fully open position.

Turn the ignition key to the ON position and check on the pressure gauge (e) that the pressure, after having increased to around 3.5 bar, then settles down at about 3.2 bar, then close valve (a) and check that the pressure remains constant for at least a minute; if this is not the case, one or more of the injectors is leaking.