Hi guys,

Well, time to seek the collective wisdom of the OOF once again.

Yesterday, swmbo called me to say that theOmega was playing up and nearly cutting out when stopped at lights etc.

Now, I have had this issue once before and solved it by cleaning out the IACV and another time I have replaced the cam shaft sensor when the revs bounced up and down at idle.   I therefore thought it must be time to clean the IAVC again.

Stripped it down today even thought the paperclip test had shown NO recorded fault codes.

Anyway, plenty of carb cleaner, and also, for good measure cleaned the butterfly thing on the air intake and cleaned out both large and small breather pipes and i thought the job would be a "good 'un".

Took the car for a spin.   all fine for 10 miles or so with plenty of stopping at lights.

Then, took it for a quick blast on the dual carraigeway and when stopping at the next exit junction back came the problem the missus had complained of.

Best way to describe would be a slight "hesitation".  Now, my guess would be that either one of the plugs or leads to one of the cylinders is breaking down, so will look into that tomorrow.

But, do you guys think this would be a likely cause of the symptoms?.....and would either of these two things cause a fault code or not? (as I said earlier, not fault codes are being stored and the engince ECU symbol is not being lit up when the symptoms happen.

Thanks for your help in advance.

I've got this exact same problem. Am going to clean the ICV tomorrow. I thought mine was the TPS but I'mtold that these don't fail. Do you think your ICV may be faulty rather than dirty?

Ok, things are looking worse!!!

There is oil in each one of the spark plug wells!!!!

And, just to make it worse....checked the oil levels and it is too high!! (missus said she had put a dorp of oil in it about a week ago....grrrr.....)

So.... could it be HG gone or just as a result of over filling?...and draining from teh sump down to proper level and cleaning up will sort??

ok....so took about 20 mils of oil out of each plug well using one of those kids   medicine pipets. Also cleaned up the plug caps.

My guess is that so much oil in each plug well is a fairly severe amount!!!  also drained oil down to normal level.

Just about to take it for a test run so see if the misfire continues

Ok will look into that.

Any other suggestions as to possible cause.....and why is it very intermittent???....some drives not a single miss-fire, then others...miss-fire on every stop...then it is slow to pull away.  Definately as if not firing on all cylinders...then suddenly....away it goes?