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Author Topic: EML on and engine misfiring  (Read 8795 times)

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alexandjen

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EML on and engine misfiring
« on: 07 October 2007, 21:14:52 »
Just had to drive 40 miles with a misfiring engine  :(  the eml has come on and the engine feels like it is running on 3 cylinders and when you start it up it stinks of petrol  :'(
Has anyone got a Tech 2 near Sittingbourne in Kent so I can see what the fault code is as apparently I can't carry out the paperclip test on a 2.2 petrol?
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Dazzler

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Re: EML on and engine misfiring
« Reply #1 on: 07 October 2007, 21:18:28 »
No unfortunatley you cannot do a paperclip test on the facelift Omegas :(
The Boy is the man with the Tech 2
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maria

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Re: EML on and engine misfiring
« Reply #2 on: 07 October 2007, 21:45:59 »
Don't continue to use the car with a misfire, the unburnt fuel will kill the precious metal in the catalytic converters.

Tests you can do before tech2 -

1) Compression test, get a tester of ebay for a tenner, very easy job. Hope to goodness your compressions are OK though

2) Check connection to the coil per plug pack is OK.

3) Remove the plugs, look for a black one, that will be the cylinder that's not firing.

A failed coil pack may not log a failt code, however using a Tech2 and test plugs, you should be able to identify if there is a strong spark on each plug...

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Dazzler

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Re: EML on and engine misfiring
« Reply #3 on: 07 October 2007, 21:57:05 »
Quote
Don't continue to use the car with a misfire, the unburnt fuel will kill the precious metal in the catalytic converters.

Tests you can do before tech2 -

1) Compression test, get a tester of ebay for a tenner, very easy job. Hope to goodness your compressions are OK though

2) Check connection to the coil per plug pack is OK.

3) Remove the plugs, look for a black one, that will be the cylinder that's not firing.

A failed coil pack may not log a failt code, however using a Tech2 and test plugs, you should be able to identify if there is a strong spark on each plug...

You are very knowledgeable Maria, has James left you a handbook on these things??? ;D
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maria

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Re: EML on and engine misfiring
« Reply #4 on: 07 October 2007, 21:59:47 »
Quote
Quote
Don't continue to use the car with a misfire, the unburnt fuel will kill the precious metal in the catalytic converters.

Tests you can do before tech2 -

1) Compression test, get a tester of ebay for a tenner, very easy job. Hope to goodness your compressions are OK though

2) Check connection to the coil per plug pack is OK.

3) Remove the plugs, look for a black one, that will be the cylinder that's not firing.

A failed coil pack may not log a failt code, however using a Tech2 and test plugs, you should be able to identify if there is a strong spark on each plug...

You are very knowledgeable Maria, has James left you a handbook on these things??? ;D

He talks about such things in his sleep...
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nij

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Re: EML on and engine misfiring
« Reply #5 on: 08 October 2007, 00:15:37 »
sounds like the coil pack to me mate  ;)
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TheBoy

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Re: EML on and engine misfiring
« Reply #6 on: 08 October 2007, 09:52:35 »
Worth lifting the coil pack off and checking for oil (gasket failure), and checking plugs whilst there.  Thats cheaper than a Tech2 to tell you which cylinder is misfiring ;)
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Re: EML on and engine misfiring
« Reply #7 on: 08 October 2007, 16:54:43 »
Quote
Worth lifting the coil pack off and checking for oil (gasket failure), and checking plugs whilst there.  Thats cheaper than a Tech2 to tell you which cylinder is misfiring ;)

I agree, oil/water in the plug wells.
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Kevin Wood

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Re: EML on and engine misfiring
« Reply #8 on: 08 October 2007, 17:11:29 »
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He talks about such things in his sleep...

Now, why doesn't that surprise me?  ;D

If he says anything about AR25s you know it's a nightmare!  ::)

Kevin
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alexandjen

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Re: EML on and engine misfiring
« Reply #9 on: 08 October 2007, 18:45:26 »
Ahh now that is interesting about water in the plug wells as I cleaned the engine bay on Sun morning  :-[ ::)
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JONNYWAKEY

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Re: EML on and engine misfiring
« Reply #10 on: 08 October 2007, 18:50:56 »
Alex

I have a 2.2 2001 CD Omega and have suffered with the same symptoms.

Took the advice from TB, it was oil in the plug wells.

I purchased new coil pack from Autovaux and new plugs, also new cam gasket as this had torn letting oil in.

Take your time fitting the gasket, ensure you get new o rings for bolts etc.

Mines as good as new "Touch wood"

Good luck

Jonny
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alexandjen

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Re: EML on and engine misfiring
« Reply #11 on: 08 October 2007, 18:54:54 »
Thanks Jonny
How much did the coil pack set you back then?
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alexandjen

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Re: EML on and engine misfiring
« Reply #12 on: 09 October 2007, 20:14:39 »
Right quick update  :(
I took all the plugs out today, cleaned and replaced them. Looks like some oil is getting onto the rear two plugs.
Put it all back together and now the car won't even start, just turns over  :o
What could I have done? I only cleaned the plugs  :-?
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TheBoy

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Re: EML on and engine misfiring
« Reply #13 on: 09 October 2007, 20:36:07 »
How much oil?  Check connector to coil pack properly inserted as well.
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alexandjen

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Re: EML on and engine misfiring
« Reply #14 on: 09 October 2007, 20:37:33 »
Connector clicked into place and not a great deal of oil
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