Are spark plugs all the same?

[Dave Thomas]

Use oem plugs from a reputable supplier not from the internet. You would be better off having it diagnosed correctly instead of hoping it will fix your problem. Reading codes is not a diagnosis and a code scan is not a parts list.

 

[fmyth]

I just read your first post again. You stated that the car does not idle at the same rpm and you have taken it to a mechanic. Did the mechanic pull any codes? Although the plugs are due for replacement I wouldn't assume they are the cause of your idle issue. Problems with idle can be caused by a dirty throttle body, dirty or failing MAF sensor, dirty or failing throttle position sensor (TPS), or a failing crankshaft position sensor.

If it were my car I'd take it to the local parts store and have them use their scanner to connect to the OBD-II port to check see if there are any diagnostic trouble codes. If there are codes write them down and google the code to find common causes, symptoms, and potential solutions. If there are no codes I'd replace the spark plugs with OEM's, put a can of injector cleaner in the gas tank, clean the MAF and throttle body. You can find youtube videos to show you how.

 

[xziang]

2nd with what some others have said go with a similar oem plug. This is also a product I would buy from a dealership or NApa or well known auto parts store. Avoid amazon and ebay due to fakes, not worth the risk to save a couple bucks.

 

[Yoder]

I only use what the vehicle manufacturer recommends. Nothing else. I used to just buy middle of the road priced plugs until I had my car go into limp mode 50 miles from my house after changing my plugs one time.