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2008 honda civic 1.4 i-dsi (L13A7) Cylinders 1,2,3 & 4 misfire and random misfire DTC

Hi All,

Need some help diagnosing a problem on the wife's civic.
Last week she was driving and the engine warning light came on and the VSA lamp came on. She noticed a drop in power and hesitation in the engine. I took the car to a local mechanic and the diagnostics revealed a faulty #5 ignition coil and misfires in three out of the four cylinders. (there are 8 plugs and 8 coils since it is dual ignition spark)

I changed the #5 ignition coil (right hand side most coil in rear bank of four) and all 8 spark plugs -NGK. Made no difference to the car, still hesitating, I then borrowed a WOW diagnostics tool which is telling me I have misfires on all four cylinders and a random misfire, but the #5 coil fault has disappeared.

Faults codes P0300, P0301, P0302, P0303 & P0304

When idling, the car doesn't run rough but when you start to drive the issue emerges. I reset all the fault codes last night, then started the car and she did not set any fault codes again while idling.

The oil level was also low when I checked, I topped up to about half way between min and max.

There is also a burning smell (when I step out of the car), I only drove the car a couple of miles down the road and I could smell it.

Can anyone help?
What are the most likely causes of these failures?

17,936 Posts
Welcome to :civinfo:, sorry to hear that you are having issues tho.

It's odd that ECU is reporting misfires across all cylinders, which suggests an problem somewhere else rather than a specific cylinder.

Maybe there is an inlet manifold leak, EGR valve is sticking, MAF sensor needs a clean, etc?

Reference P0301 - OBD-II Trouble Code

The burning smell maybe a symptom rather than cause but did the old plugs look okay?

Premium Member
1,848 Posts
Sounds like the coil pack need changing. If it specifies the cylinder it ps usually the ht leads. Stick some new sparks in as well.
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