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Home >> Volvo >> 1972 >> 142 Base, Eng CD B20F, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Ignition System >> VOLVO Engine Modification >> Testing >> E.G.R. Valve

E.G.R. Valve

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With engine at idle, connect distributor vacuum line to vacuum connection of E.G.R. valve. Engine should now stop or begin to run rough. If this does not occur, check all hoses and pipes for clogging. If no clogging is found, replace E.G.R. valve and retest.