Josh Cook inherited pole position during qualifying ahead of the 19th round of the British Touring Car Championship at Croft Circuit.
Damp track conditions carried on for the duration of the intensely-close qualifying session.
Teammates Aiden Moffat and championship-leader Ash Sutton went into the barrier at Turn 1 one after another.
Their separate circumstances each deployed a red flag period as they both got themselves stuck in the gravel trap.
Many drivers were getting punished for exceeding track limits, particularly at end of the Jim Clark Esses (Turn 8).
Eventually, Tom Ingram set a time of 1m27.075s for provisional pole position, but subsequently lost it due to a post-session front ride height infringement.
The fourth-placed driver in the championship will start at the back of the grid for Round 19 as a result.
Cook inherited pole with a time of 1m27.350s.
Senna Proctor’s 1m27.450s was disqualified and disallowed having also failed post-session checks, losing his second position.
Jake Hill (6 kg of ballast) set a strong turn of pace early on and officially took second with a time of 1m27.500s.
Turkington was promoted to third with a time of 1m27.510s as he heads into Round 19 with a 54 kg success ballast for his second place in the championship standings.
His teammate, Tom Oliphant, was sat behind with a time of 1m27.574s.
Bobby Thompson set an impressive time to claim fifth with a time of 1m27.593s.
Ash Sutton, having set dominant pace early into the session, was not able to improve his personal best of 1m27.635s with his minor damage and thus fell to sixth.
He will still carry the 60 kg maximum success ballast for leading the standings.
The two FK8 Civic Type Rs of Tom Chilton and Matt Neal took seventh and eighth positions.
Michael Crees and Rory Butcher rounded off the top-10.
Mike Bushell qualified in 20th out of 25 cars and will carry a 45 kg weight ballast into Round 19 as he replaces Tom Onslow-Cole for this weekend in the Volkswagen CC.
Former Ginetta star and BTCC debutant Jac Constable qualified just behind him, as he will typically carry the same weight ballast into Race 1 for his rookie duties.