[en] A search for isoscalar dibaryonic resonances by means of missing mass spectra in the d + d → d + X reaction has been attempted using deuteron beams of T = 2.29, 2.00 and 1.65 GeV. The results do not show any evidence for a narrow peak with a limit of 0.03 pb/MeV2 for a 15 MeV width or a broad enhancement which could be unambiguously attributed to a dibaryonic resonance.