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[tunes]

looking for help and suggestions pleeeeaaasseeee

right, car is a 99 omega 2.0 16v ecotec cd

started it up the other nite and it was ticking over a bit lumpy but then cleared itself with no further probs
went out last nite on a 90 mile trip with no probs at all

when i left my dads it was runnning lumpy again and breaking down in power under any sort of hardish accelaration

if i increased power slowly then it was fine

took lead cover off and pulled all 4 leads off and no 1 (closest to front of car) had a lil bit of what looked like oil on the lead and number 4 (closest to bulkhead) had a orange dusty dirt round the lead with a bit of oil round the bottom

looking inside plug chambers it looked quite oily

now here the problem lol someone sed yh thats ok always look like that hmmmmmm

or is my gut instinct rite and rocker cover gasket gone?

or or we both wrong and its gunna be something like head gasket arrgghhhh

many thanks in advance for any help

[markey mark]

yep gasket gone and breathers need cleaning matey ! whomever told you its normal is a pratt   leads will fail and then dispac  

[tunes]

arggghhh which gasket? please say rocker cover lol

[feeutfo]

arggghhh which gasket? please say rocker cover lol

Yep. Cam/rocker cover, call it what you will. Fairly sure there is a guide in maintenance for the 4pot. Clean breathers as well or itll go again. And may as well do the idle valve bit, or whatever its called on them, while your at it. You may find the actual miss fire is the oil cooking the rubber boots on the lead cap. But you can check all that while your in there. Hth

[trinity0_10]

I recently had a miss fire on my V6, I found a plug not firing with indications it had water in the well & this was the probable cause of the Dis pack failing.
Symptoms were vibration at idle, especially when in top under acceleration it was like driving over a rumble strip, gradual acceleration was not quite as teeth rattling.
If the plug isn't firing it will be obvious when its removed compared to the others.