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3800 misfire found cylinder 5 by LoW_KeY
Started on: 06-02-2014 11:45 AM
Replies: 6 (297 views)
Last post by: LoW_KeY on 06-02-2014 08:12 PM
LoW_KeY
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Report this Post06-02-2014 11:45 AM Click Here to See the Profile for LoW_KeYSend a Private Message to LoW_KeYEdit/Delete MessageReply w/QuoteDirect Link to This Post
Found my misfire cylinder 5 giving me grief. 320 misfires. So I guess tomorrow I check plug, then go to parts store to buy plug wire. I dont have a spare to test grrr all the luck. I'm guessing one of the 2?

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3800 SC/IC Formula whines more than your girl... 12.7@113 330 HP/430TQ
08 Cobalt SS TC - ZZP tuned, K&N SRI, 6k HID's 13.31@107

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Report this Post06-02-2014 12:38 PM Click Here to See the Profile for JfrostSend a Private Message to JfrostEdit/Delete MessageReply w/QuoteDirect Link to This Post
Definitely could be a plug/wire, I'd also check the coil packs themselves. Sometimes moisture can get in there and cause some rust and/or corrosion, this happened on my GTP before. If so, use some sandpaper to clean them up.

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Project L67 Fiero

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LoW_KeY
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Report this Post06-02-2014 01:13 PM Click Here to See the Profile for LoW_KeYSend a Private Message to LoW_KeYEdit/Delete MessageReply w/QuoteDirect Link to This Post
wouldn't it cause a bad misfire on 2 if coil was bad? I hot tomorrow off so I'll play around being i know its cylinder 5.

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3800 SC/IC Formula whines more than your girl... 12.7@113 330 HP/430TQ
08 Cobalt SS TC - ZZP tuned, K&N SRI, 6k HID's 13.31@107

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phonedawgz
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Report this Post06-02-2014 01:50 PM Click Here to See the Profile for phonedawgzClick Here to visit phonedawgz's HomePageSend a Private Message to phonedawgzEdit/Delete MessageReply w/QuoteDirect Link to This Post
Close down your plug gap to 40 and see if that clears it up.
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Justinbart
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Report this Post06-02-2014 04:16 PM Click Here to See the Profile for JustinbartSend a Private Message to JustinbartEdit/Delete MessageReply w/QuoteDirect Link to This Post
Swap the plug with another cylinder see if it follows. Swap a wire with another cylinder see if it follows. etc etc. Don't just throw a ton of parts at it all at once.

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Turbo 3800 E85 F23 5spd spec5
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Darth Fiero
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Report this Post06-02-2014 06:10 PM Click Here to See the Profile for Darth FieroClick Here to visit Darth Fiero's HomePageSend a Private Message to Darth FieroEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by LoW_KeY:

wouldn't it cause a bad misfire on 2 if coil was bad? I hot tomorrow off so I'll play around being i know its cylinder 5.



I have seen the coils themselves crack and leak spark only on one cylinder. The other cylinder works fine in these cases (producing a misfire code on only one cylinder). So yes, it is possible you COULD have a bad coil that caused a misfire only on one cylinder.

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LoW_KeY
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Report this Post06-02-2014 08:12 PM Click Here to See the Profile for LoW_KeYSend a Private Message to LoW_KeYEdit/Delete MessageReply w/QuoteDirect Link to This Post
thanks for heads up. I'll change plug wire and plug see if its still there. If it is I'll hit zzp new coil 25 bucks.

I'd change to different cyclinder but have no scanner to read things came up p0300... guy at shop said 5 was biggest issue

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3800 SC/IC Formula whines more than your girl... 12.7@113 330 HP/430TQ
08 Cobalt SS TC - ZZP tuned, K&N SRI, 6k HID's 13.31@107

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