This study explored engineering graduates' academic writing challenges while pursuing their doctoral degrees in information technology, electronics and communication engineering, mechanical engineering, and textile engineering. The focus was on grammar, vocabulary, syntax, coherence and cohesion difficulties. Data were collected by a survey to gain first-hand information from 88 PhD researchers in these collages of engineering. Results revealed that these graduates needed help in syntax, general vocabulary and discourse functions in writing. Punctuation was one of the least problematic of all areas under examination. In light of these findings, some remedial measures are suggested to develop a better sense of cohesion and coherence in scientific-technical discourse. Understanding and applying organizational strategies in writing facilitated through peer reviews and tutor reviews would be a source of support. Paraphrasing strategies is another area in which scholars need plenty of practice. They need to be taught to apply all these strategies without abandoning source material for want of paraphrasing skills.