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Assistance needed: b18c1 spark or timing issue. Where do I start?
Hey so I'm getting a hard stutter when I hit VTEC full throttle that shakes the car but it's fine if I ease into it. I got a faulty knock sensor code so I'm getting a new one but I checked my spark plugs and ones a little off colour and they all have a little white. If anyone has had the same issue please lmk
re: Assistance needed: b18c1 spark or timing issue. Where do I start?
How old are those plugs? None of them look particularly good to me. Are you on a stock ECU and tune? Have you noticed any oil leaks? The last plug looks like it has some sort of deposits on it, and that second plug is either running rich and/or is saturated with oil, and all of them look like they have a fair bit of carbon buildup.
I'd recommend checking your distributor timing to begin with. From what little I can see the timing marks on the straps look off like the timing may be too advanced.
re: Assistance needed: b18c1 spark or timing issue. Where do I start?
Heat range "5" is too hot for a B18C1. Make sure you get the proper heat range when you replace them... heat range "6" would be stock and a "7" would be one step colder.