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2012 Accord random missfires

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Old Jul 29, 2024 | 10:38 AM
  #1  
dconrads's Avatar
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Angry 2012 Accord random missfires

It started out with a P0302 code. I switched two coil packs and the code stayed with P0302 so I replaced the spark plugs. It still came up with P0302 code so I replaced the coil packs. Now it comes up with P0300 random misfire, P0302, misfire no 2 cylinder, and P0303, misfire no 3 cylinder. The vsa light stays on and at idle the engine light goes off, but when I accelerate the engine light comes on and flashes. I'm trying to understand what's going on but I'm not understanding why.
 
Old Jul 29, 2024 | 04:33 PM
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The fuel injectors?
 
Old Jul 29, 2024 | 05:16 PM
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Default fuel injectors

That was going to be the next step. I'll let you know.
 
Old Jul 30, 2024 | 04:28 PM
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If you take the valve cover off then look at the cylinder number 2 valve. May be the exhaust side. Spring has popped???
What do they call it? The spring keeper or valve keeper falls out??? Well, just a bug fat guess.
 
Old Jul 30, 2024 | 06:40 PM
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Originally Posted by avisitor
If you take the valve cover off then look at the cylinder number 2 valve. May be the exhaust side. Spring has popped???
What do they call it? The spring keeper or valve keeper falls out??? Well, just a bug fat guess.
If he dropped a valve he'd know it. They call them keepers.
 
Old Aug 3, 2024 | 05:52 PM
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Default 2012 Accord Random misfires

I replaced the injectors. The engine light still comes on and still flashes. The DTC is still misfires.
 
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