Gas pump?

Good morning to all of you???….not quite…and that’s it: I’ve been driving V70 Bj 2000 on LPG for 70,000 km. Since about 30,000 also with the engine warning light. Error memory says misignition cylinder 2. Well, it’s not my real problem at the moment. For 2 days it doesn’t start on petrol anymore. If I let it start with the emergency start procedure on gas it’s no problem, but not on petrol. I tried to switch to petrol during the ride, but I already had the problem a few times that he doesn’t jump on me before work. But after work everything is OK again. And I already had the problem that he switched to petrol (if the gas has gone out) but just runs out after 3-6 km (by the way a very crappy feeling at 160 on full highway…). But after you finally stand on the stand strip, he jumps again without a problem. e on. After 3-6 km the same game. Until he can drive again on gas. But you can avoid the problem in which you do not drive the gas tank empty. Well and for 2 days he does not start at all on petrol. Father-in-law means petrol pump, because you can not hear it when you turn on the ignition. Incidentally, I also read here that the 2000 petroler tends to fail the petrol pump. Securing fuel pump is still quite. Or what else could it be? Where is the fuel pump located? n the petrol pump, that you can test this even today with the father-in-law on the hole? And someone already knows how much it costs? Aus- und Einbau will not be so difficult, right? Thanks for your help already in advance. And nice Sunday still.