P0307 code after K&N CAI install.

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Slip-N-Slide

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Has anybody thrown the P0307 code after installing a CAI. The code is cylinder 7 misfire detected which causes a decrease power state on my engine will driving when it comes in.
 

KWT2000

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check the plug and coil on hole 7 maybe you unplugged it or it just happend at the same time, stranger things have happend
 
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Slip-N-Slide

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P0307 code after K&N CAI install.

That was my first move. I changed coil packs around to see if it would throw the code in a different location and it didn't. It still says cylinder 7.
 
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Slip-N-Slide

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P0307 code after K&N CAI install.

Yea I had the spark plugs and coil packs all replaced the first week in April. I am going to change the spark plug to see if that clears it up. It's probably just a coincidence that when I installed the CAI that a new plug went bad.
 

FordandPolaris

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Yeah the CAI would have no effect on the plugs unless you somehow got some liquid in the intake while changing it. Could foul a plug that way but it is highly unlikely in my opinion.
 

Lightnig

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...

Could foul a plug that way but it is highly unlikely in my opinion.


Not necessarily unlikely

One of the reasons I dislike K&N; the strong possibility of over-oiling the filter and the engine ingesting the extra oil and fouling plugs and coating MAF and other sensors with the stuff...
 

FordandPolaris

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Not necessarily unlikely

One of the reasons I dislike K&N; the strong possibility of over-oiling the filter and the engine ingesting the extra oil and fouling plugs and coating MAF and other sensors with the stuff...

This is a good point.
 

1997SCEBFEX

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Not necessarily unlikely

One of the reasons I dislike K&N; the strong possibility of over-oiling the filter and the engine ingesting the extra oil and fouling plugs and coating MAF and other sensors with the stuff...

in nearly a million miles on many vehicles, have never had this happen.

PanHandler.
 

Lightnig

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That's great to hear sceb, you obviously know what you are doing and have had really good success.:waytogo:

Unfortunately, I have read many a tale on other boards where others have not been nearly as successful as you have.

Mind you, I am not saying it will happen, just that I've been around long enough to know that it can and does happen to some people.
 
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