Found out why my widows were fogging up in heavy rain.
It was the front bulkhead drains blocked, I had checked them when it was dry, and couldn't feel a blockage, but last night after checking the carpets and sunroof , I couldn't find the issue then looked under the top bulkhead covers and found water about 3" deep, loosened the top of the wheel liners and poked my finger in the drain and got about a gallon of water out of each side.
the trapped water was heating up from the engine, as the air intake is in the same section it was drawing in hot damp air , the give away was it suddenly getting worse turning a corner.
A simple test is pour water in the area under the windscreen wipers, it should pour straight out. 8)
It was the front bulkhead drains blocked, I had checked them when it was dry, and couldn't feel a blockage, but last night after checking the carpets and sunroof , I couldn't find the issue then looked under the top bulkhead covers and found water about 3" deep, loosened the top of the wheel liners and poked my finger in the drain and got about a gallon of water out of each side.
the trapped water was heating up from the engine, as the air intake is in the same section it was drawing in hot damp air , the give away was it suddenly getting worse turning a corner.
A simple test is pour water in the area under the windscreen wipers, it should pour straight out. 8)