Question about 1999 Ford Expedition
I think if we are talking about the 4cyl engine single cam they should be in front by exhaust pipe, but if twin cam, u need to remove the 4 screws holding what looks like a top aluminum cover which is a ignition and plug module to get to the spark plugs assuming we are not talking about the v6 firebird.
Posted on Dec 30, 2012
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Posted on Jan 02, 2017
That's because they are hidden quite well. If you look at the engine, you'll see yellow plastic prongs (?) that look like spark plugs, but hook up to the silver tubing. That's the fuel injectors. BUT, right behind the yellow plugs, are black ones. The black one is the connector to the spark plug. The plug itself sits about 4 inches down into the block of the engine. They are a real pain, and from what I can tell, you only have decent access to the first 2-4 of them, then they get too far back and start going under the dash (you'll see what I mean when you get there).
Posted on Aug 06, 2008
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