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Hi guys, hope everyone is safe and healthy out there.
Recently my car has developped a misfire issue. I am keep getting this P0302 code, which I have checked online its the cylinder 2 random misfire. I have changed spark plugs (4 of them) and I swapped the coil pack from different cylinders to cylinder 2. And still has the code keep coming back.
My car is an 2006 with 50K-ish miles, only has k&n intake with q300 exhaust, otherwise stock car.
Inspect the valve clearance and do a valve adjustment before they get burnt. I can almost guarantee the exhaust valves will be tight in all cylinders and even more so in Cyl #2.
I see,
how many miles usually a valve adjustment is needed?
I've seen tight exhaust valves cause a misfire on multiple vehicles, not just S2000's.
With the 06-09 S2000, it's recommend getting the valves adjusted every 50k miles. The DWB cars run much leaner aka hotter which cause the valves to tighten up much quicker over time.
Just do yourself a favour, remove the valve cover and inspect the clearance, it doesn't cost anything and it's better than throwing parts at the car.
01-06-2021, 01:04 PM
Misfire Isuess
