misfire question

[ogre20012001]

ok so I have a misfire code on cylinder 7. my question is how hard is it to pull cop? do I need to pull fuel rail?
I'm new to this 5.4L ford engine. I'm used to the old 302/5.0 and 351/5.8 so this new modular v8 is all new to me.
back ground is 2003 expedition 5.4 Eddie bouer 4x4


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[toms89]

#7 is under the fuel pressure regulator. In my case it is inaccessible due to my large aftermarket fuel pressure regulator. I have to lift my fuel rail to get to #7. Cannot recall if I had enough access with the stock regulator.

 

[ogre20012001]

ok thanks
what is the number sequence on the cylinders?
is it the same as the old blocks or is it different


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[FordandPolaris]

Passenger has 1,2,3,4 starting from front to back

Driver is 5,6,7,8 from front to back. 7 is accessible using a 7mm universal combo to remove the COP bolt. Then it comes out with a little wiggling.

Now this is with a 1st gen, I doubt there is too much difference on the 2nd gen but there might be some.

 

[ogre20012001]

ok thanks so much for the info it's a big help


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[toms89]

I'm used to the old 302/5.0 and 351/5.8 so this new modular v8 is all new to me.
http://tapatalk.com/m?id=1

Was in the same boat here but have gotten pretty familiar with the 5.4 last few years...

 

[tsingson]

ok so I have a misfire code on cylinder 7.

How did you know that it was cylinder 7 if you don't mind me asking?

 

[ogre20012001]

went to orileys and had them read the code


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[tsingson]

Oh ok. I get a slight misfire intermittently here and there but no code ever appears.

 

[metaldrgn]

Oh ok. I get a slight misfire intermittently here and there but no code ever appears.

Usually means it isn't bad enough to set a code. Just give it time and it should pop a code. How long has it been since you did a plug change? Might have a bad COP