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[kentman99]

I'm feeling very annoyed with myself, after paying to get the rocker cover gasket, plugs and leads replaced last week and now the dispac (£95 for the dispac and £50 to fit) it turns out that the gasket was actually ok!!!!  I bought the car thinking the gasket leak and associated probs were the cause of my misfire so I bought the bits and got them fitted. And guess what....it still misfired!  The mechanic showed me the old bits and I thought the plugs were brown with oil but apparently it was just they were really old and knackered. This has only come to light today when I enquired whether he'd cleaned the plug wells and he told me they were bone dry. He said he told me this last week so not sure why I wasn't annoyed then! Its my own fault as I went with what the previous owner was told rather than getting it checked it out first. I don't know how much cheaper it would of been just having the plugs and leads changed but I only paid £90 labour which I didn't think was too bad considering he changed the gaskets aswell. The only consolation is that its now (hopefully) I job I won't have to have done again. I'm just praying that the new dispac solves the prob, the old one was cracked.

[Ghost]

Try the paperclip test to c if there is any faults, ( misfire )
www.omegaowners.com/forum/YaBB.pl?num=1189022687
this is the link on how to do it. apart from that its always good to know tricks like that.

[Darth Loo-knee]

I'm feeling very annoyed with myself, after paying to get the rocker cover gasket, plugs and leads replaced last week and now the dispac (£95 for the dispac and £50 to fit) it turns out that the gasket was actually ok!!!!  I bought the car thinking the gasket leak and associated probs were the cause of my misfire so I bought the bits and got them fitted. And guess what....it still misfired!  The mechanic showed me the old bits and I thought the plugs were brown with oil but apparently it was just they were really old and knackered. This has only come to light today when I enquired whether he'd cleaned the plug wells and he told me they were bone dry. He said he told me this last week so not sure why I wasn't annoyed then! Its my own fault as I went with what the previous owner was told rather than getting it checked it out first. I don't know how much cheaper it would of been just having the plugs and leads changed but I only paid £90 labour which I didn't think was too bad considering he changed the gaskets aswell. The only consolation is that its now (hopefully) I job I won't have to have done again. I'm just praying that the new dispac solves the prob, the old one was cracked.

As long as the breathers have been done at the same time you should not have a problem, if they haven't the problem will be back again

[Seth]

It's known as the 'law of the sod' mate!

It's a safe bet that most, (if not all) of us have been here at some point. Fingers crossed for you bud!

[amba]

Sounds like a fair bet it is the dispack as if original unit was cracked you would probably not been getting a full spark or intermittent.The way to look at this is you have now had most of the common faults rectified so with luck you can now enjoy the car.
As stated before as long as the breather system was thoroughly cleaned and genuine GM gaskets were used and correctly torqued to 8nm you are sorted.

[Martin_1962]

The gaskets do go with age - so not wasted

[kentman99]

The dispac not going be sorted out until Tuesday now unless I want to pay £130 for an after market replacement (available now) rather than £95 for the Bosch version. The old one is apparently in poor condition with lots of cracks.  I'm still not sure that this will be the end of my troubles, my previous experience of driving a car with a misfire (vw golf) was every now and then it would be a little hesistant when accelerating and things like that. Whereas with the Omega it does this plus it sounds like a tank when accelerating and the idle is a bit erratic.  Ive heard the EGR valve can cause some of these symptoms aswell.  Any thoughts guys?

[amba]

Have you replaced the fuel filter as that is a cheap quick fix and again worth doing if the car has an unknown service history..could be causing your problems.

[kentman99]

Thanks for that Amba I'll give it a try. Apologies for not calling last week by the way.