Hello there. I'm quite new to this forum & would be grateful for any help whatsoever. My 1992 R129 SL500 refuses to start. I've been trying for 3 weeks now but still no joy. The car hasn't had a run out for some time due to I'll health but was started up last year a few times by my son and the engine run sweet. However when I've come to it this year it just won't fully fire. There is spark to all the plugs and fuel is getting through, however there is a strong smell of petrol from the exhaust. I'm getting closer to it running as it is now running for 2 or 3 seconds then cutting out. There are three lights on the dashboard for ASR, but that's always been on. But there are also lights for seatbelt warning & battery. Even though I've just put a new battery on. It's also just started chiming from the drivers seat. It wasn't doing this before when it wouldn't start. I would be unbelievably grateful if someone could help as at the moment it's the one thing that I'm desperate to sort out as I've never really had time to enjoy the girl through ill health and would love to do a proper road trip in her. Thanks so much for your time. All the best & stay safe. Glyn.