What caused this?
Ok, so no problems with my Defender so far with 6 months of ownership (knock on some wood!)
This morning, it was chilly (34) and it had rained like a monsoon for the last two days. I had filled the tank up with gas a few days ago, and it basically had sat without moving for 3 days before I got in it to leave this morning.
When I cranked it, it started, ... then hiccuped, ... and then it started sounding like a locomotive (like it was pulsing the idle). It did that for the short quarter mile trip to my business. Once at the work, I rev'd the engine and then it hiccuped again (not quite a backfire).
When I got out, ... there was this black wet tar like substance under the exhaust . (not like your typical carbon burn, but rather like a creasote).
Is it possible that some water had gotten in the fuel? You guys got a clue?
Seems to be running just fine now.