Mastering spatial and temporal coordination in speech production is a challenge for children.Voice onset time reflects timing in speech. The objective was to study VOT in Swedish children with a diagnosed phonological impairment and compare results with normative data.Thus 38 children 4-11 years, in three age groups were audio-recorded when producing minimal pairs with the plosives /p b t d k ɡ/. Waveforms and spectrograms were analysed.Results show that children with phonological impairment produced plosives with deviant VOT-values and greater variability compared to normative data. No developmental trend was seen with increasing age. Also, no relationship was found between VOT-values and degree of impairment measured by percentage phonemes correct. Findings were interpreted as displaying motor coordination difficulties.