Cylinder 1 Misfire, please help

jan_mast

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Mechanics,

I have a 2008 Chevy Cobalt that i have been having an issue with.

I have been having a misfire in #1 cylinder for awhile now. I bought a code reader after the check engine light came on. The error code is P0301.

I first replaced all of the spark plugs. Still had the misfire. So i ordered and replaced the coil pack for the #1 cylinder. (I am assuming that the #1 cylinder is on the left if i am standing in front of and facing the vehicle).

So i am a little unsure of how to proceed to fix this misfire issue. Any help would be GREATLY appreciated. Thanks!
 

YelloEye

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You are correct, cylinder 1 is the one closest to the passenger fender.

What motor do you have? When are you seeing the misfires happening? What's your spark plug gap set at?
 

Bass_Waves

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Coil pack is easy to replace. Mainly like Yelloeye asked. Plug gap.
Also I would check the wiring to the coil pack.
If a new coil pack does not fix it. Wiring is good. Report back.
 

YelloEye

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Play musical coil packs, then you don't unnecessarily buy one.
 

Bass_Waves

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Quite funny but I have 4 extra lsj coil packs in case of emergency lol
 

YelloEye

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Meh, pack goes I'll run around all Subaru till I get a new one :lol:
 

jan_mast

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I have already replaced the coil pack for the #1 cylinder, no joy.

I bought the plugs that were already gapped. Plus I replaced all four and only #1 cylinder is misfiring. I'll have to look up what the engine size is.

I tried looking up the wiring but was unable to find part number for it. Any ideas? Thanks again!
 

Bass_Waves

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No no as in check for any cut wiring. The connector to the coil pack and such.
Do you know what type of cobalt you own.?
Cobalt LT
Cobalt LS
Cobalt Sport
Cobalt SS
Since its an 08 it can be any of those.
 

jan_mast

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I have an LS (2.2L)

I will follow out the cable, and check the connector, for the #1 cylinder.
 

Bass_Waves

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I think somebody has extra engine parts here. Silver Balt?
 

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