![]() So, last week, Febrary 25th, I decided to replace those plugs with NGK BKR5EIX-11 Iridium plugs. ![]() These plugs had been installed in October 21 (NGK BKR5-11, 14 months, 7500 miles).īeginning February, we poured a can of Oxicat on the fuel tank to try and clean the catalytic convertor, but the chack engine light remained on. On January 7th 2023, I removed the spark plugs to have a look at them, and they looked normal. I cleared the light hoping for the best, but it came back a couple of days later. We've had this car for about two years.Ī couple of months ago, we got a P0420 code (catalytic convertor eficiency below threshold). I'm worning on my wife's 2007 Suzuki SX4, with about 160k miles on the clock.
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