Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: OpelJay on 19 December 2012, 20:11:33
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Hi all and merry Xmas.
To put it as simple as possible I have a 2.0 engine, when it's idleing
It tends to show a blip or Missfire the needle drops slightly not enough to
Stall but enough to drop real low this also happened when drivin along at about 2000/3000
Revs there's this slight miss or blip its not a real drama but would be nice to fix.
Things I've covered.. New idle control valve, new TP sensor new rocker gasket
Inlet cleaned new leads new plugs new cam shaft sensor air filter is clean
And I've recently serviced it. Also when the revs drop low it does throw a light up I've paper clipped and the only codes that show up are the ones that show up because of low voltage and that's because it's going to cut out so no real help there.
Any help is greatfull in these hard times :)
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although there can be several reasons as your car is dual fuel, my initial guess would be
air leak..
also I would check for battery , alternator charging voltage and bearings ..
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There's no difference on the gas same thing happens I've checked for air leaks I can't see any or perished pipes I wonder if it's a crank sensor?
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There's no difference on the gas same thing happens I've checked for air leaks I can't see any or perished pipes I wonder if it's a crank sensor?
I dont think its the crank sensor.. it will throw codes, hard/no start when hot and some other things..
how long you have been on lpg with this car ?
you can try spraying carb cleaner (*on cold engine*) around inlet manifold to check if idle plays up.. or a cigarette smoke to see if its sucked in..
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Ok I'll get some carb cleaner and try that I've had a load of codes come up such as
1/6/8/0
0/1/3/0
0/1/0/0
0/2/0/1
0/2/0/2
But I've checked them all and they all just tell me it's because when it blips and cause its about to stall it tricks the ecu and throws these codes up or am I wrong?
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whip the spark plugs out and see what colour they are. I had a vectra with the same engine and one of the valve stem oil seals has a hole in it. It gave similar symptoms to what you describe and one of the plugs was covered in oil. It's a quick thing to check but to fix requires head removal.
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whip the spark plugs out and see what colour they are. I had a vectra with the same engine and one of the valve stem oil seals has a hole in it. It gave similar symptoms to what you describe and one of the plugs was covered in oil. It's a quick thing to check but to fix requires head removal.
the car uses lpg, so I thought about valve stem seals but recommending rebuild at the first step not practical ;D
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whip the spark plugs out and see what colour they are. I had a vectra with the same engine and one of the valve stem oil seals has a hole in it. It gave similar symptoms to what you describe and one of the plugs was covered in oil. It's a quick thing to check but to fix requires head removal.
the car uses lpg, so I thought about valve stem seals but recommending rebuild at the first step not practical ;D
I recomended the easy diagnosis before going down other rabbit warrens. The car will run perfectly fine with a hole in the valve stem oil seal, it will just blip from time to time and smoke a little on start-up. Head rebuild on the 2.0/2.2 can be done easily in 1-2 days.
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whip the spark plugs out and see what colour they are. I had a vectra with the same engine and one of the valve stem oil seals has a hole in it. It gave similar symptoms to what you describe and one of the plugs was covered in oil. It's a quick thing to check but to fix requires head removal.
the car uses lpg, so I thought about valve stem seals but recommending rebuild at the first step not practical ;D
I recomended the easy diagnosis before going down other rabbit warrens. The car will run perfectly fine with a hole in the valve stem oil seal, it will just blip from time to time and smoke a little on start-up. Head rebuild on the 2.0/2.2 can be done easily in 1-2 days.
also a compression test ..
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Ok well the last time I checked witch was 2 weeks ago when I changed the plugs there was no colour diffarance, with the gas guys it's optional so does not run on it all the time it's one or the other.. Also since thi blipping has started I've noticed I can here one bucket/tappit - tapping could my problem be a sticky valve??
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Ok well the last time I checked witch was 2 weeks ago when I changed the plugs there was no colour diffarance, with the gas guys it's optional so does not run on it all the time it's one or the other.. Also since thi blipping has started I've noticed I can here one bucket/tappit - tapping could my problem be a sticky valve??
a leaking valve stem seal is a higher probability imo.. but hard to say without actually hearing the engine..
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Hi all and merry Xmas.
To put it as simple as possible I have a 2.0 engine, when it's idleing
It tends to show a blip or Missfire the needle drops slightly not enough to
Stall but enough to drop real low this also happened when drivin along at about 2000/3000
Revs there's this slight miss or blip its not a real drama but would be nice to fix.
Things I've covered.. New idle control valve, new TP sensor new rocker gasket
Inlet cleaned new leads new plugs new cam shaft sensor air filter is clean
And I've recently serviced it. Also when the revs drop low it does throw a light up I've paper clipped and the only codes that show up are the ones that show up because of low voltage and that's because it's going to cut out so no real help there.
Any help is greatfull in these hard times :)
I fail to see why the voltage should change if the car stutters. :-\
As for your comment about the codes read:-
"But I've checked them all and they all just tell me it's because when it blips and cause its about to stall it tricks the ecu and throws these codes up or am I wrong?"
I think you may well be wrong.
I'm not sure I can interpret your collection of codes, but I reckon some others on here might have a crack.
One thing I would check, is that no cables have chafed and caused intermittent shorts in the cable tray along the length of the engine (on top of the injectors). That might be causing your injector fault codes and your oxygen sensor code, and the misbehaviour?
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Well just to recap ive fixed the reving problem due to a TPS witch was a dud part car is better but the bliping is still there. I've also changed the air mass flow sensor the over day fuel pump relay and redX but still no joy I'm kinda getting to that point now where I think it needs to go on a machine?? It has these symptoms on both gas and fuel mainly on fuel, Any ideas :( ??