The past 2 years that I have had my Explorer I have noticed that in the summer it is stalling out. Well yesterday things got really bad with it, In order to keep it running I have to leave my foot on the gas and place it in neutral sometimes.
I checked my vacuum lines and found 1 line that was torn up from wear and tear, and was promptly fixed. Unfortunately that did not solve the problem as I had hoped.
I am hearing a loud hissing noise as if there is a vacuum leak but I cannot find it, as all the lines that are visible are in good condition. Are there any lines that are hidden that are accessible if you know where they are at?
How hard is it to change out the spark plugs w/o having to tear off half of the engine?
Thanks in advance for your help.
~Dan