The other morning my car struggled to start, alot of spluttering etc. So I didnt use the car at the weekend as i was working / out etc so it sat from friday till monday. This morning i went out to start it and it did the same, but after a few attempts the was what sounded like a pop followed by some smoke, so I popped the bonnet and there was a yellow sludge all around the filler car, so i took the filler cap off and there was smoke coming out it.
I managed to borrow another car today but I am away all day and cant get anyone to look at the car, what i need to know is what could it be and would it be safe to try and start it again???