+1 for the manifold off over winter.

Dependent on what’s found and general experience of this operation, the choice appears to be :

LPG valve saver or similar
Remove manifold at intervals and clean valves
Exchange the car for one with a different engine

Recent removal of the crankcase breather/air intake connection may help long term. Time will tell.

Have to say, my GDI with 20k under its belt currently displays a virtually straight line power curve and obeys my every command without cough, quibble or splutter.


Chris

2015 Plus 4 Silverlake Blue
(2014 3.7 Roadster Crystal Blue)
(2012 4/4 Sport Black)