Hello, I have a problem with my engine, it’s a 1.2l Puretech 82 hp. I just recently had my Citroën upgraded to car gas, it runs top on LPG, but now it’s causing problems in petrol operation. If the car is still cold and has not switched to gas, the engine is jerking out without end, and as soon as it’s on LPG there are no problems, full power, no jerking and no misignitions. Yesterday, after the engine w Poor running has switched to petrol and the problems were still there, I thought it is a problem in the cold run phase, but as you can see it is not so, anyway the engine control light did not light up, even if the car zaps like a washing machine drum on petrol. I switched spark plugs 1tkm ago and I would have no idea what that could be. Thank you in advance for your help ??