Q: my volvo s 40 came with 3 tipped spark plugs. will the single tipped ones work?
My Volvo S40 has a message that says reduced engine performance. It idled rough for a minute but ran fine after that. I've changed the spark plugs because it was past time, but the new ones that I got from AutoZone only have one tip and the old ones had three. now it is running worse than before. Could the spark plugs make it run worse? AutoZone scanned the car and said it was the fuel rail pressure sensor. I have one on order now.
My car has 160000 miles.
My car has a manual transmission.
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