Spark plugs fire late?
#1
Spark plugs fire late?
Hello, i have a 2002 civic ex. I am having issues starting my car, the fuel is there, cranks over fine, but what i noticed when doing a spark test is that when i start cranking the engine, it turns over about 3 times before the spark plugs fire. I tested all 4 and they all do this. It makes me think that maybe they are not firing at the right time. What could be causing this issue? Thank you
#3
Honda-Tech Member
Re: Spark plugs fire late?
Does it have a CEL, have you checked the timing belt, the cam, and crank sensors something could be loose? I tried to start it with a loose cam sensor it would spark erratically The coils themselves might be bad, but all 4 at once is unlikely. ECU could be bad as well, although in my experience it still turns on with a fried ECU in limp mode.
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