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Any ideas ... Misfire Cyl 1 and 3 Any ideas ... Misfire Cyl 1 and 3
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Old 03-17-2011, 06:55 PM   #1
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how old are the spark plugs?
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Old 03-17-2011, 07:47 PM   #2
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old.

Old as in I was already planning on replacing and they need to be replaced. Could be *really* old, I don't know when 1st owner changed.
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Old 03-17-2011, 08:54 PM   #3
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OK, let's assume for a moment that they never got changed...
How many kilometres do you have on the car?
If it's more than - let's say - 60,000 it could well be worn spark plugs.
So why don't you start there?

One tip for changing spark plugs:
The electrical connectors which snap on the coils must really snap on and they are pretty hard to get all the way on (you MUST hear a click when you put them back on) otherwise you just introduced more misfire (ask me how I know
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I still wave at Boxsters, but they no longer wave back :-(
2002 Boxster S "Violet" (sold but not forgotten)
2009 Carrera 4S "Kelsey" (current ride)
2015 FIAT 500e "Nikki" my commuter car
Last edited by ChrisZang; 03-17-2011 at 08:58 PM.
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Old 03-17-2011, 09:05 PM   #4
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new spark plugs fixed my miss-fire issues.
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