- Remove the air filter.
- Include ignition, disconnect a hose from a thermal timer and a hose from a tee of the vacuum regulator of ignition and blow in these hoses.
- At a temperature of soaked up air of +20 °C contacts of the relay have to be opened. At a temperature below 20 °C of relay it has to be switched off approximately through 15 from later inclusion of ignition.
- For replacement of the relay disconnect a block and remove the valve from an inlet collector.
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