My Arcadia developed a cough

[Paperclicer]

A couple of days ago I noticed that my Arcadia is becoming more vibraty and sound's like a 3 pack smoker trying to hold it in. It also feels, I'm not sure about this, like it's not running on full power. I have touhgt about the spark plugs, but I had them replaced recently and barely have 10k miles on them. What could be the problem? If it's the plugs, why now and not when I had them replaced?

 

[ACDTalkerX33]

It's hard to say for sure without looking at it. Sometimes a single faulty plug or even a bad coil pack can cause those symptoms. It might not have shown up immediately if the issue was intermittent or just starting to fail. Another culprit I could think of would be a vacuum leak. Maybe get a mechanic to do a diagnostic check?

 

[theused666]

I think its a spark plug issue, sometimes even new plugs can fail early, especially if one was defective or not gapped correctly. Have you had a diagnostic scan done to check for misfire codes or anything else pointing to a specific cylinder?

 

[Ilovecocacola]

You might be dealing with a coil going bad or a fouled plug despite the recent change, just because the plugs are only 10k miles in doesn't mean one didn't fail early or get contaminated, is the CEL on?, if it isnt, check it, it might still be logging misfire codes you can catch with a scan tool, I'd start there

 

[Paperclicer]

You might be dealing with a coil going bad or a fouled plug despite the recent change, just because the plugs are only 10k miles in doesn't mean one didn't fail early or get contaminated, is the CEL on?, if it isnt, check it, it might still be logging misfire codes you can catch with a scan tool, I'd start there

no check engine lights at the moment, but I don't have a scanner to see if there are any codes. I'll be taking it to a mechanic when I get a chance and will see what he says. I spoke to him on the phone and pretty much gave me the same answers as you, plugs or coil