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9.14. Check and adjustment of installation of a corner of an advancing of ignition

Models with system of ignition on Hall's effect

Check of installation of a corner of an advancing of ignition requires a stroboscope. Pay attention to the nest which is available in a motive compartment or near a distributive opening in the top part of transmission for connection of the branded measuring SAAB device; this device is not the device of broad use available to house mechanics.

Start the engine and let's it get warm up to the normal working temperature, then switch off the engine.

Disconnect from the vacuum regulator on the distributor a vacuum hose and its zakuporta.

Connect a stroboscope to a high-voltage wire of a candle of the 1st cylinder
(the next to a distributive chain on the engine), working according to instructions of the manufacturer. Use of the stroboscope equipped with a capacitor clip as the clip can be connected to a high-voltage wire near a distributor cover is ideally recommended. In case the wire of a stroboscope has to be connected to a candle of the 1st cylinder, it will be required to remove a viewing cover of the top part of a head of cylinders for ensuring access to candles.

Start the engine and leave it working at the turns of idling demanded according to Specifications and direct light from a stroboscope to a special opening of a casing of transmission.

The corresponding distributive tag on a flywheel / a driving disk has to appear the visible and combined with a distributive tag on the case transmission.

If necessary make adjustment. Weaken a distributor clip bolt, then slightly turn the distributor case before combination of distributive tags. For increase in an advancing of ignition turn the distributor case clockwise and for reduction of an advancing turn the case counterclockwise. After the correct combination of tags fix the distributor permanently and tighten a clip bolt. Repeat check of coincidence of distributive tags, if necessary carry out repeated adjustment.

After the correct installation of a corner of an advancing of ignition on single turns gradually increase turns of the engine and you monitor increase of a corner of an advancing of ignition - distributive tags have to move further from a point of coincidence to increase in turns. Such check confirms, at least, functioning of the mechanism of the centrifugal regulator of an advancing - more careful and detailed check is made in representative office of SAAB.

Connect a vacuum hose to the vacuum regulator, then make sure that the corner of an advancing of ignition increases when opening a throttle - besides more detailed check is made in representative office of SAAB.

After the correct installation of a corner of an advancing of ignition stop the engine and disconnect a stroboscope.

Models with direct ignition, (being a part of the Trionic system)

On models with direct ignition the corner of an advancing of ignition is programmed in system of the electronic actuation device (ECU) and is not subject to adjustment and even exact check. In case there is a suspicion on abnormality of installation of a corner of an advancing of ignition, the car has to be driven away in representative office of SAAB, possessing the necessary equipment for reading of a code of malfunction from system of the electronic actuation device.