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961

Omega General Help / Re: 2.5 petrol manual estate misfiring

« on: 15 August 2018, 20:11:45 »

Is the code 19 still present?
On the earlier V6 if you read the codes with the ignition on but engine off then it will always report code 19. It should clear when the engine is running. Else the sensor is foobar or the connector still has an issue.

Cobblers

A 19 is always a corrupted signal. And is 99.9% of the time the sensor, with that 0.1% being a faulty flywheel or ECU.

With engine not running, you get a 30 (No RPM signal) on a pre 2001 V6

Hmmm 30? Did you mean 31?

Apologies. Looks like I had that the wrong way round. I must have been thinking of 31 = no RPM signal as opposed to 19 = incorrect RPM signal. Anyway it isn't confirmed whether code 19 is still a problem, since the sensor connector was fixed. So it might all be irrelevant.

Concerning the misfire, not all failed coil packs have splits or cracks or melted bits. I have an original here, somewhere, that looks fine but misfires under load.

962

Omega General Help / Re: Engine dying

« on: 13 August 2018, 15:58:03 »

If the issue has gone away due to filling the tank then I'd first replace the fuel filter. There might be crud that moves about and blocks, when you go round a bend. Also the filter is not routinely replaced,  usually only when somebody suspects a blockage, so yours might be as old as the car. You'll need some clamps to block the pipes before you replace the filter else you'll be covered in petrol.

Cutting out as you approach and stop at traffic lights, roundabouts and the like is more in the style of a failing crank sensor. But your opening post implies going round a corner or a bend only. You didn't mention stopping?

Also I wouldn't rely on the fuel gauge on the dash. Omegas seem to be woefully inaccurate. Carltons and Senators were better.

963

Omega General Help / Re: 2.5 petrol manual estate misfiring

« on: 12 August 2018, 17:33:40 »

Did you do anything to test whether the replacement purge valve fully closes and fully opens? Or if stuck, is it stuck open or closed?
Also was the coil pack a known good pack?

964

Omega General Help / Re: My Omega has let me down

« on: 11 August 2018, 17:35:32 »

The cam cover seals need to be replaced, at least on the o/s bank. And the breathers cleaned out. Else the plug wells will rapidly fill with oil again. It's not that difficult to do and is a standard issue that eventually afflicts all the V6 and 16V models. I wouldn't ditch the car just for that.

If the misfire continues it might cause further damage.

965

Omega General Help / Re: 2.5 petrol manual estate misfiring

« on: 11 August 2018, 17:11:28 »

I too suggest you examine the plugs. You mentioned that the plug lead boot for cylinder 2 was damaged apparently due to arcing which might have been down to water in the plug well. So you replaced the plug lead for 2.  However if it's the coil pack actually faulty on plug 2 then you might find evidence of a spark fault on cylinder 5 in the opposing bank. That's because plug 2 is paired with plug 5 using the same coil with a wasted spark.

Plugs 6 & 3 and 4 & 1 are the other pairings.

As to the 1200rpm idle. Might the throttle cable be too tight following reassembly? Such that the butterflies in the throttle body don't fully close when the pedal is released?

966

Omega General Help / Re: 2.5 petrol manual estate misfiring

« on: 11 August 2018, 03:00:02 »

Is the code 19 still present?
On the earlier V6 if you read the codes with the ignition on but engine off then it will always report code 19. It should clear when the engine is running. Else the sensor is foobar or the connector still has an issue.

967

Omega General Help / Re: 2.2 ignition control module (coil pack) boots

« on: 09 August 2018, 12:26:10 »

somthing like these https://www.ebay.co.uk/itm/4x-NEW-Ignition-coil-pack-Spark-Plug-Rubber-Boot-connectors-Springs-Repair-Kit-/302464175896

Yes, something like!

Do you know if the boots and the springs in the listing properly fit a 4 pot Omega? (Not sure that the resistive caps are required.) There's no mention of an Omega or even a Vauxhall/Opel with a similar size engine in the application list.

968

Omega General Help / 2.2 ignition control module (coil pack) boots

« on: 07 August 2018, 18:24:42 »

I recently had to replace the cam cover seals on my 2.2 16V as it was leaking. The plug wells were full of oil. I removed the plugs and they looked serviceable, so I put them back in. However 3 out of the 4 rubber boots for the plugs had a small split in the lower skirt. Perhaps 6mm to 8mm in length. The main body of the boots was OK, just the bit that's deepest in the wells are split.

The splits didn't look like they might spread upwards towards the plug caps. So do I need to replace these boots? And is there any urgency?
Are spare boots even available?

Thanks,

969

Omega General Help / Re: Can belt change

« on: 31 July 2018, 17:49:27 »

That Sykes Pickavant kit doesn't seem to include the offset ring spanner required to properly adjust the belt tension on the revised idler adjuster, used model year '97 on. The original GM special tool is Kent Moore J42069-40?. A standard spanner, even a deep offset type, likely won't fit into the recess in the roller making it very difficult to hold the adjuster hex in the correct position whilst you tighten the TX locking bolt. Absent the correct spanner you'll find that the timing marks go out of line when you rotate the crank through 360 & 720 degrees. The special tool makes it way easier and quicker to get the belt tension correct first time such that the marks are consistently aligned as the crank is rotated.

The later Sealey VSE130 kits include the spanner. I think very early versions might not. Likewise the Laser and SP kits have no spanner. The Sealey spanner is VS1301 and is available separately to the kit and seems more readily available than the KM. So factor the cost of the spanner into your purchase.

Incidentally I've never had a problem with the Laser kit.

970

Omega General Help / Facelift door mirror replacement

« on: 29 July 2018, 15:48:39 »

I'm finally getting around to replacing the slightly smashed nearside mirror shell & bezel on my 2003 estate. Is it necessary to completely remove the door card to get good access to the bottom screws holding the mirror mount? Or is there some easier method?

971

Omega General Help / Re: Can belt change

« on: 28 July 2018, 17:54:30 »

There's a kit on ebay for £38 delivered. It appears to include the special ring spanner required for the later roller adjuster. The Sealey version of that spanner is around £30 on it's own and the SP kit doesn't appear to include one. I've no idea how well made the kit is, but given that you're only likely to use/need the kit once or twice it would seem like a good punt for the money.

972

Omega General Help / Re: Label in Windscreen; Is this "normal" windscreen or a bit more...

« on: 19 July 2018, 19:19:28 »

Incidentally, mine has exactly the same details as yours, except the 0 on the last line is a 2.
base model, so no rain sensor and not reflective, but it does have a graduated blue sun strip

In case it becomes relevant in the future, mine is a Dec 2003 registered CDX. The windscreen labelling is identical excepting I also have a '2' on the last line.

973

Omega General Help / Re: 2.2 cam cover sealant

« on: 13 July 2018, 14:04:03 »

OK got it off. And struck oil, all four spark-plug wells full. The camshaft cover was stuck due to a cable jammed underneath the nearside edge. Presumably from when the cambelt was changed.

974

Omega General Help / Re: 2.2 cam cover sealant

« on: 13 July 2018, 12:39:19 »

Excellent. Thanks for that!

I'm having trouble getting the cam sensor disconnected in its well. Assuming there are two clips, towards front and toward bulkhead I can only get at the bulkhead side. The front side is under the lip of the cam cover and I can't see where to press. Any ideas how to get it released.

Also how do I get the top of the cambelt cover released from the edge of the cam cover. Mine seems to be solid with no play to unhook suggesting a screw or clip somewhere?

Thanks,

975

Omega General Help / 2.2 cam cover sealant

« on: 13 July 2018, 11:08:33 »

Has anybody got a photo(s) of where the cam cover sealant goes on the 2.2 Z22XE? IE to visualise the below? Thanks,

"Apply the sealing compound to the areas to the side of the cam clamps which are at the pulley end of the cams (i.e. the front of the engine on the Omega). It should be applied so as its parralel with the cams and starts at the front of the head and finishes at the rear of the cam clamp. Ensure that it is a reasonable size bead which is touching the cam clamps."