I have a 1999 318ti MSport and it has been running rough on start up - the car lives outside. After a bit of searching I have discovered water (not coolant) in the #1 (front)plug well.
Looks like it is getting in under the plastic plug cover and running to the front of the engine and filling the plug well BUT I can't see where it has been getting in. I thought it might have been getting in thru the air intake grill on the bulkhead but if it is I can't see how it is running from there to the plug cover.
Anyone experienced and fixed this before or any suggestions.
Once the water is cleaned up and the plug and wires dried out it runs like a BMW should