No start
2 Answers
By using the term "turn over", do you mean the engine will not spin when the key is turned to the start position? If so, check electrical connections. Is the key totally dead when turned to the start position, no response from the engine/starter at all?
I don't think u meant turn over. If it won't start, check fuel pressure at rail, if fuel pressure is above 35psi, check for spark at the plugs, if both are ok, do a compression test, it might've skip a tooth on timing chain. If u meant doesn't turn over, then U need to troubleshoot starter circuit