Workshop Manuals Factory service & repair Fiat
01 General information02 Specifications03 Manufacturing data and tolerances04 Tightening torques05 Fluids and lubricants06 Maintenance07 Diagnostic checks08 Engine09 Clutch10 Gearbox and differential11 Axles and driveshafts12 Brakes13 Steering14 Suspension and wheels15 Heating, air conditioning and auxiliary units16 Electrical equipment17 Body fittings18 Body panels and frame19 Wiring diagrams and electrical functions20 Wiring harnesses21 Connectors and pin-outs22 Fault diagnosis23 Special tools
Fiat Doblò Factory Service Manual (2000-2010)08 · Engine
08 · Engine

Methane injector leakage test

Make
Fiat
Model
Doblò Factory Service Manual
Year
2000–2010
Section
Cng fuel system › Methane injector leakage test
EngineMethane injector leakage test

Methane injector leakage test

Check 1058B

BIPOWER

The safety instructions described in the manual must be followed when working on the methane system components. Keep devices at high temperatures or those which could cause electrical sparks away.

Let the engine run for a few minutes on methane.

Turn the ignition key to the OFF position.

Disconnect the battery negative terminal.

Disconnect the connectors (1) from the methane injectors.

Methane injector leakage test

Remove the methane pipe (2) retaining bands from the injectors.

Methane injector leakage test

Remove the methane distribution manifold keeping the low pressure pipe and the injectors connected.

Methane injector leakage test

Introduce a small amount of oil into the injector spray duct.

Methane injector leakage test

Check that there are no gas leaks shown by a series of oil bubbles.

Parts & tools for this job Staging For 2000 Fiat Doblò

Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.