Hello. My elk is jerking in the first and second gears, at the start. Only on LPG. In the gas fuel forum I was advised to change the ignition coil. Yesterday I renewed the spark plugs myself,(to 0,7) although the others were not old. And the distributor cap was cleaned. The problem remained. Now my question: Can it really be the ignition coil Because only to try it out is the somewhat expensive. At Skandix 70,48 €. Do you have an idea? Thank you. Mfg.Stig