2018 Edge Titanium 2.0L Questions - #4 misfire code

[Bungo Pete]

Hello All:

 

The title says it all - I have a few questions:

 

1. I have about 73k on the clock.  I am getting a periodic #4 misfire code and will be replacing the spark plugs/coil packs.  Any recommendations in terms of brand?

2. Downloaded the specs and was surprised to see that premium fuel is recommended.  I have never burned anything other than 87 octane and am wondering if this is an issue.

3. I have black leather interior, and am now seeing faded white splotches.  Anyone else have this problem?  Fixes?

[Wubster100]

8 hours ago, Bungo Pete said:

1. I have about 73k on the clock.  I am getting a periodic #4 misfire code and will be replacing the spark plugs/coil packs.  Any recommendations in terms of brand?

Do you notice any white smoke? It is possible that there could be coolant intrusion.

[Bungo Pete]

No white smoke.  

[1004ron]

It would be best to assess the likelihood of coolant intrusion before spending money on parts and labor and then we can move this thread to the one discussing that.

 

A simple test that places like AutoZone can do, is to sniff for combustion gases in the cooling system - the thread on coolant intrusion has more details on the testing.

 

Don't expect you'll see white smoke from the exhaust with the intrusion issue.

 

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Edited yesterday at 05:54 PM by 1004ron