hi, have the M.A.F. checked 1st either put it on diagnostics or if you know anyone with same engine see if you can put his on yours then try starting it if its running fine then you've got the answer !!!!!! then clean yours very gently on the very thin sensor strands using cotton wools buds dipped in meths or nail varnish remover !!!! then either air dry it before re-fitting ,,, the whole procedure takes about 10 mins and worked for me so its a cheap fix ,, then sensors do get clogged up with the ****ty petrol and gas that is abundant in certain areas ,, P.S. the nail varnish is my wifes honest ????????
ha ha anyway let us know how you get on ,and to the others it is possible to start straight onto gas its happened to me a few times till it was rectified by a full lpg service and new vapourisor ,,besr regards MOZZ:crazy_driver::crazy_driver::crazy_driver: