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Topic Re: Really, unless the coils are relatively new and the bad one is just suffering from premature... |
Misfire & spark plug / coil replacement Trygve (San Francisco, CA) - Saturday, 26 February, 2011, at 3:06:17 am |
Re: Misfire & spark plug / coil replacement MauriceonLongIsland - Saturday, 26 February, 2011, at 4:25:21 am |
Quote
Trygve (Alameda, CA)
So yesterday as I was nearing home, the car stumbled pulling away from a stoplight and the check engine light flashed and then stayed lit. Two minutes later I pulled into the garage and the idle was rough, with a sort of pulsing/missing exhaust note. The Durametric reads two fault codes:
- P0300 / 507 - Misfire detection
- P0304 / 511 - Misfire cylinder 4
That seems pretty clear. Likely bad plug or coil on cylinder 4, right? Did my very short drive to work & back today, and it stumbles noticeably from every stop. My inclination is to just replace all the plugs myself ASAP, since it has been a while. It sounds easy except for awkwardness of accessing the two forward plugs. If this sounds reasonable, my questions would be:
- Full replacement could be 6x of plug, coil (or just plug connector), and spark plug tube -- is all that overkill?
(Or does it make sense to just get 1 $40 coil in case #4 coil is cause?)
- Is cylinder 4 the front driver side cylinder? (#4 will deserve the most scrutiny.)
- Go with the standard Beru plugs or is there a perfectly good locally available alternative?
Thanks for advice,
Trygve
Highly logical, Mr. Spock! Trygve (San Francisco, CA) - Saturday, 26 February, 2011, at 2:24:56 pm |
I do not like swapping plugs around. They come new with a thread coating.... MarcW - Saturday, 26 February, 2011, at 3:56:33 pm |
Re: I do not like swapping plugs around. They come new with a thread coating.... Edmond in SoCal - Saturday, 26 February, 2011, at 9:44:24 pm |
No. The thread coating is not anti-seize. There is no thread coating on the new plug threads I... MarcW - Sunday, 27 February, 2011, at 2:48:00 pm |
This logic stuff must STOP! JM-Stamford,CT - Saturday, 26 February, 2011, at 11:36:00 pm |
Not much experience with Boxster misfires but wouldn't you know my experience is quite... MarcW - Saturday, 26 February, 2011, at 12:10:58 pm |
Maybe not something in the air, but something in the fuel. E15 perhaps. *NM* Laz - Saturday, 26 February, 2011, at 12:21:24 pm |
Unless the signs are wrong none of the stations I use supply E15. E10 is what's being sold... MarcW - Saturday, 26 February, 2011, at 1:55:53 pm |
Thank you for the enlightenment, MW. *NM* Laz - Sunday, 27 February, 2011, at 12:34:18 pm |
Re: Misfire & spark plug / coil replacement BoxsterBob - San Carlos - Saturday, 26 February, 2011, at 1:31:25 pm |
Really, unless the coils are relatively new and the bad one is just suffering from premature... MarcW - Saturday, 26 February, 2011, at 1:58:30 pm |
Re: Really, unless the coils are relatively new and the bad one is just suffering from premature... BoxsterBob - San Carlos - Saturday, 26 February, 2011, at 3:08:13 pm |
Well, failed is a relative term. Often times a coil will act up but self-correct when the engine... MarcW - Saturday, 26 February, 2011, at 4:03:25 pm |
Swap and troubleshoot to see which coil or plug is the problem,,, dghii - Saturday, 26 February, 2011, at 9:35:08 pm |
Results so far... Trygve (San Francisco, CA) - Saturday, 26 February, 2011, at 10:44:38 pm |
Re: Results so far... MauriceonLongIsland - Monday, 28 February, 2011, at 1:33:10 am |
Will do! Trygve (San Francisco, CA) - Saturday, 5 March, 2011, at 5:59:54 am |