Wartsila’s User Group › Forums › 50 SG Engine › Starting air valve problem. This topic has 0 replies, 1 voice, and was last updated 6 years ago by Anonymous. Viewing 1 post (of 1 total) Author Posts November 20, 2017 at 9:05 am #1751 AnonymousInactive Hello guys! Has anyone ever had recurring problems with the starting air valve? Here on our site we are having frequent locking problems in the open position, causing the starting air to lose pressure. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In