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Author Topic: Misfire  (Read 1462 times)

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greenman

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Misfire
« on: 19 September 2010, 12:05:34 »
Started from cold this morning.Running on 3 cyl. emission light comes on.After about half a mile misfire clears and emission light eventually goes out.Any thoughts?
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stece

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Re: Misfire
« Reply #1 on: 19 September 2010, 12:19:23 »
lambdas? that was the issue with mine just try giving them a clean
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greenman

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Re: Misfire
« Reply #2 on: 19 September 2010, 12:36:39 »
Would this cause the misfire?
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Brikhead

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Re: Misfire
« Reply #3 on: 19 September 2010, 14:25:38 »
Quote
Would this cause the misfire?
No, lambda sensor could not cause a mis-fire, more likely the mis-fire is allowing unburnt fuel into the exhaust which is putting on the emission light.

Mis-fire could be caused by faulty plugs or leads, or maybe the coil pack (I assume one, or more, is fitted to a 2.2?).

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greenman

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Re: Misfire
« Reply #4 on: 19 September 2010, 14:42:37 »
I was thinking plugs as the misfire disappeared when it warmed up.
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CaptainZok

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Re: Misfire
« Reply #5 on: 19 September 2010, 14:48:42 »
Check the plug wells for oil.
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greenman

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Re: Misfire
« Reply #6 on: 19 September 2010, 14:56:38 »
Already checked today.Dry.Replaced rocker gasket 2 weeks ago.
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CaptainZok

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Re: Misfire
« Reply #7 on: 19 September 2010, 15:02:27 »
Quote
Already checked today.Dry.Replaced rocker gasket 2 weeks ago.

Rules the first cause out then, so it's plugs, rubber boots on the coil pack then coil pack itself in ascending order of cost.
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greenman

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Re: Misfire
« Reply #8 on: 20 September 2010, 15:22:57 »
Misfire only at idle.Accelerates fine.
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TestOmega

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Re: Misfire
« Reply #9 on: 20 September 2010, 15:28:48 »
Quote
Misfire only at idle.Accelerates fine.
Electrical system is most stressed at idle.  Battery, charging system, weak coils or marginal/fouled plugs in my opinion.

Turn all auxiliary devices off like fans, radio, heater, etc., and see if the idle improves for battery and charging system check.

Cheers.
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greenman

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Re: Misfire
« Reply #10 on: 20 September 2010, 19:37:30 »
Battery and charging system A.o.k.Looks like change of plugs then coils.
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TestOmega

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Re: Misfire
« Reply #11 on: 21 September 2010, 00:17:49 »
Quote
Battery and charging system A.o.k.Looks like change of plugs then coils.
May perhaps check what is in the following before anything else,

http://www.omegaowners.com/forum/YaBB.pl?num=1283863220

Re: Sparkplug Tightening Torque
Reply #4 - Yesterday at 18:2

Cheers.
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