Checking engine idle speed

CHECKING ENGINE IDLE SPEED

If the engine idle speed is not 860±50 rpm and the injection/ignition control unit is the self-regulating type then it is not possible to carry out any adjustments. It is therefore necessary to check that the accelerator control linkage is correctly adjusted and to search for the problem by carrying out a complete fault diagnosis using the Fiat Lancia/Tester.

CHECKING CONCENTRATION OF POLLUTANT EMISSIONS

This electronic injection/ignition system is capable of automatically controlling the advance, the carbon monoxide (CO) content and the idle air flow rate, therefore no manual adjustment operations are required.

However, a check on the content of the exhaust gases, upstream and downstream of the catalyzer, can provide precious information on the injection/ignition system operation and the catalyzer and engine parameters.

Table summarizing pollutant emission tolerance figures