91 325i. The short of it is that the car started fine, died and now won't restart. I think it might be tied to an intermittent clank I hear on occasion around the valve cove, it's like a low knocking. Ive had the issue of the car dying on warmup a couple times but now it just cranks and doesn't start. It died with a slight thud and I'm worried that worse case scenario the timing is off. Anything I could check quickly would be ideal as I'm currently stuck trouble shooting I'm a parking lot.