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Author Topic: Omega 2.2 2002 replaced head gasket now will not fire  (Read 187 times)

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MadMike

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Omega 2.2 2002 replaced head gasket now will not fire
« on: 05 September 2019, 20:36:24 »

I bought an omega 2.2 a few months back. when starting from dead cold it usually was lumpy as if firing on 2 or 3 cylinders but would run OK after a few hundred yards and was then problem free for the rest of the day.
A few weeks back it was hard to turn over initially (one barrel was full of water), a few flicks of the key and it started with a cloud of steam....
I got a mechanic friend to do the repair (I am of the very old school and know nothing about electronic ignition or sensors).
He did the replacement without disconnecting the exhaust and a few other things by tilting the head to one side, he cleaned the block and head and replaced the head gasket.
He did not disturb the coil pack whilst doing this (assuming all was OK).
As the cams had to be removed to clean everything up I checked the valve timing with him and it looked spot on.
We turned it over a few times and it was totally dead, we checked for a spark and there was nothing.
He then removed the coil pack and it was dripping in oil and water (which must have been there from the old leaking head gasket). We cleaned it all up but there was still no spark. He thought the coil pack had been blown by being immersed in the water so i bought a new pack. there is still no spark.....
Although the air box has not been put back on (or the airflow sensor) he said all the necessary sensors are connected.
Does anyone know what else could of happened to prevent it sparking please ?
The car itself has done just over 50,000 miles being a 6 door Wilcox Limousine that had been mainly used for one purpose!
Prior to this happening most things about it looked almost like new, even under the bonnet.
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dave the builder

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Re: Omega 2.2 2002 replaced head gasket now will not fire
« Reply #1 on: 05 September 2019, 20:51:08 »

I can't see how he could remove the head without first removing the coil pack  ???
have you read the codes ?
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MadMike

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Re: Omega 2.2 2002 replaced head gasket now will not fire
« Reply #2 on: 05 September 2019, 21:51:57 »

I can't see how he could remove the head without first removing the coil pack  ???
have you read the codes ?

I have since spoken to my friend since seeing your response and he explained what I did not know previously..
The car was left overnight with the bonnet slightly ajar, it rained overnight and (unnoticed by him) water filled the area around the spark plugs. He replaced the coil pack without noticing the water in the plug holes.

So the head was torqued down late evening and the electrics done first thing the following morning !
« Last Edit: 05 September 2019, 21:54:22 by MadMike »
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Doctor Gollum

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Re: Omega 2.2 2002 replaced head gasket now will not fire
« Reply #3 on: 05 September 2019, 23:38:24 »

Two likely, simultaneous issues...

1. Coil pack wet or not plugged in correctly.

2. Flooded trying to start with no spark.
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JamesV6CDX

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Re: Omega 2.2 2002 replaced head gasket now will not fire
« Reply #4 on: 06 September 2019, 07:43:05 »

Why are you trying to start the engine before the repair is complete (airbox and MAF missing)

The airbox / MAF wonít prevent starting, but my advice is finish the repair fully, then double and triple check every single connector, is not only connected, but also not transposed with another (itís been a long time, but I seem to recall itís possible to mix up a couple of essential sensor plugs on this lump

Specifically check the crank and cam sensors very carefully.
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JamesV6CDX

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Re: Omega 2.2 2002 replaced head gasket now will not fire
« Reply #5 on: 06 September 2019, 07:44:02 »

How did you remove the water from the plug holes before fitting the new coil pack ?
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MadMike

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Re: Omega 2.2 2002 replaced head gasket now will not fire
« Reply #6 on: 06 September 2019, 11:34:05 »

How did you remove the water from the plug holes before fitting the new coil pack ?
Hi James,
I used a wet & dry vacuum with a small hose taped on the end, then soft absorbent rags to finish off.
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Enceladus

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Re: Omega 2.2 2002 replaced head gasket now will not fire
« Reply #7 on: 07 September 2019, 10:53:20 »

Check what fault codes are present and report back. Pedal trick, if you have no code reader. Since the MAAF is disconnected the fault light on the dash must be on. But clearly something else is disconnected such as the crank sensor or the coil pack. The fault codes might give you a clue.

Also you've perhaps explained the water in the plug wells but not the oil. Oil in the wells suggests cam cover seal failure. And that in turn could cause lumpy firing on startup.
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