Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: alexandjen on 07 October 2007, 21:14:52
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Just had to drive 40 miles with a misfiring engine :( the eml has come on and the engine feels like it is running on 3 cylinders and when you start it up it stinks of petrol :'(
Has anyone got a Tech 2 near Sittingbourne in Kent so I can see what the fault code is as apparently I can't carry out the paperclip test on a 2.2 petrol?
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No unfortunatley you cannot do a paperclip test on the facelift Omegas :(
The Boy is the man with the Tech 2
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Don't continue to use the car with a misfire, the unburnt fuel will kill the precious metal in the catalytic converters.
Tests you can do before tech2 -
1) Compression test, get a tester of ebay for a tenner, very easy job. Hope to goodness your compressions are OK though
2) Check connection to the coil per plug pack is OK.
3) Remove the plugs, look for a black one, that will be the cylinder that's not firing.
A failed coil pack may not log a failt code, however using a Tech2 and test plugs, you should be able to identify if there is a strong spark on each plug...
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Don't continue to use the car with a misfire, the unburnt fuel will kill the precious metal in the catalytic converters.
Tests you can do before tech2 -
1) Compression test, get a tester of ebay for a tenner, very easy job. Hope to goodness your compressions are OK though
2) Check connection to the coil per plug pack is OK.
3) Remove the plugs, look for a black one, that will be the cylinder that's not firing.
A failed coil pack may not log a failt code, however using a Tech2 and test plugs, you should be able to identify if there is a strong spark on each plug...
You are very knowledgeable Maria, has James left you a handbook on these things??? ;D
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Don't continue to use the car with a misfire, the unburnt fuel will kill the precious metal in the catalytic converters.
Tests you can do before tech2 -
1) Compression test, get a tester of ebay for a tenner, very easy job. Hope to goodness your compressions are OK though
2) Check connection to the coil per plug pack is OK.
3) Remove the plugs, look for a black one, that will be the cylinder that's not firing.
A failed coil pack may not log a failt code, however using a Tech2 and test plugs, you should be able to identify if there is a strong spark on each plug...
You are very knowledgeable Maria, has James left you a handbook on these things??? ;D
He talks about such things in his sleep...
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sounds like the coil pack to me mate ;)
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Worth lifting the coil pack off and checking for oil (gasket failure), and checking plugs whilst there. Thats cheaper than a Tech2 to tell you which cylinder is misfiring ;)
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Worth lifting the coil pack off and checking for oil (gasket failure), and checking plugs whilst there. Thats cheaper than a Tech2 to tell you which cylinder is misfiring ;)
I agree, oil/water in the plug wells.
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He talks about such things in his sleep...
Now, why doesn't that surprise me? ;D
If he says anything about AR25s you know it's a nightmare! ::)
Kevin
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Ahh now that is interesting about water in the plug wells as I cleaned the engine bay on Sun morning :-[ ::)
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Alex
I have a 2.2 2001 CD Omega and have suffered with the same symptoms.
Took the advice from TB, it was oil in the plug wells.
I purchased new coil pack from Autovaux and new plugs, also new cam gasket as this had torn letting oil in.
Take your time fitting the gasket, ensure you get new o rings for bolts etc.
Mines as good as new "Touch wood"
Good luck
Jonny
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Thanks Jonny
How much did the coil pack set you back then?
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Right quick update :(
I took all the plugs out today, cleaned and replaced them. Looks like some oil is getting onto the rear two plugs.
Put it all back together and now the car won't even start, just turns over :o
What could I have done? I only cleaned the plugs :-?
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How much oil? Check connector to coil pack properly inserted as well.
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Connector clicked into place and not a great deal of oil
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Don't continue to use the car with a misfire, the unburnt fuel will kill the precious metal in the catalytic converters.
Tests you can do before tech2 -
1) Compression test, get a tester of ebay for a tenner, very easy job. Hope to goodness your compressions are OK though
2) Check connection to the coil per plug pack is OK.
3) Remove the plugs, look for a black one, that will be the cylinder that's not firing.
A failed coil pack may not log a failt code, however using a Tech2 and test plugs, you should be able to identify if there is a strong spark on each plug...
It will.....if its bad enough....occasional miss doesnt....missing for more than about 10secs, EML on and ecu reports a missfire detected :y
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Don't continue to use the car with a misfire, the unburnt fuel will kill the precious metal in the catalytic converters.
Tests you can do before tech2 -
1) Compression test, get a tester of ebay for a tenner, very easy job. Hope to goodness your compressions are OK though
2) Check connection to the coil per plug pack is OK.
3) Remove the plugs, look for a black one, that will be the cylinder that's not firing.
A failed coil pack may not log a failt code, however using a Tech2 and test plugs, you should be able to identify if there is a strong spark on each plug...
It will.....if its bad enough....occasional miss doesnt....missing for more than about 10secs, EML on and ecu reports a missfire detected :y
DBW engines log a misfire. Non DBW do not.
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Don't continue to use the car with a misfire, the unburnt fuel will kill the precious metal in the catalytic converters.
Tests you can do before tech2 -
1) Compression test, get a tester of ebay for a tenner, very easy job. Hope to goodness your compressions are OK though
2) Check connection to the coil per plug pack is OK.
3) Remove the plugs, look for a black one, that will be the cylinder that's not firing.
A failed coil pack may not log a failt code, however using a Tech2 and test plugs, you should be able to identify if there is a strong spark on each plug...
It will.....if its bad enough....occasional miss doesnt....missing for more than about 10secs, EML on and ecu reports a missfire detected :y
DBW engines log a misfire. Non DBW do not.
:y Alexandjen is a DBW :y
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Right quick update :(
I took all the plugs out today, cleaned and replaced them. Looks like some oil is getting onto the rear two plugs.
Put it all back together and now the car won't even start, just turns over :o
What could I have done? I only cleaned the plugs :-?
Did you clean out the dispack, if so, what with?
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Does it fire at all ? Plug leads in wrong order (on DIS pack or plugs) perhaps? (not sure if you took them off the dispack)
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I haven't cleaned the diss pack at all, I did pull the rubber sleeves off the springs and re tensioned them.
It looks like a sealed unit to me.
I regapped the plugs as 3 of them were well over 1mm.
Now it doesn't fire whatsoever and stinks of petrol after turning it over.
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Silly question ..... you did put the HT leads back on the DIS pack in the right order ... didn't you ??
:)
I would now try removing a plug, connecting to HT lead, grounding the thread and cranking over .. look for a spark at the plug ... as It sounds to me you have no spark from DIS pack .. or spark is occuring at the wrong time .....
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Is a bit of a silly question :) as on the 2.2 the plug caps are built onto the diss pack (no leads) and is impossible to get it wrong ;)
If there is no spark does this point to a faulty diss pack?
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If there is no spark does this point to a faulty diss pack?
Not neccesarily......
It could be imobiliser stopping it from starting for example.....but the EML would flash at the same time as cranking....plus i also thinks it shuts the fuel pump off so you wouldnt get a stink of petrol.
Could be a fuse......the big buggars in the engine compartment....check those :y
My ex veccyB wouldnt start one day.....that was a fuse in the eng compartment for the ECU.....i found that when i tried to read the ecu for what it thought was wrong and i couldnt......obviously as the ecu had no power.
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Could be a fuse......the big buggars in the engine compartment....check those
Would I have to get spare fuses from Vauxhall? ::)
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Just to remind peeps, the 2.2 uses a CPP arrangement, so no seperate DIS or HT leads.
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Could be a fuse......the big buggars in the engine compartment....check those
Would I have to get spare fuses from Vauxhall? ::)
No....any motoring shop will have them......but just pull em out first to check visually :y
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Ok thanks, will check them tomorrow.
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Could be a fuse......the big buggars in the engine compartment....check those
Would I have to get spare fuses from Vauxhall? ::)
No....any motoring shop will have them......but just pull em out first to check visually :y
And scrapyards have lots... ...unless Tunnie has been there first ::)
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Right another update.
Code read the car today and it is storing fault code P0320 misfire detected on cylinder 2 :-?
Any further suggestions appreciated
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Right another update.
Code read the car today and it is storing fault code P0320 misfire detected on cylinder 2 :-?
Any further suggestions appreciated
I single cylinder misfire is most likely to be HT related (plug or coil pack). Worth checking the coil pack plug is clean. Engine issues may also cause this, but unlikely (I'm sure you would have mentioned cambelt failures etc!)
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Thanks, just rechecked the code and it is P0302 Cylinder 2 misfire detected.
I have removed the rubber sleeves on all of the diss pack caps and they are clean.
I suppose it could be a duff plug but why won,t it fire up on 3 cylinders, it won't fire at all.
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I wonder if the crank sensor cable was disturbed when you had it apart and it's now failed. Do you get any lights coming on / going off / flashing on the instrument panel when you crank it?
Edited to say OOPS! Just noticed it's a 2.2. Strike that!
I guess the cylinder 2 code was stored when it was last running, so that points to the cylinder that's misbehaving.
Might be worth putting a compression tester on that cylinder just to eliminate a serious engine problem. Most likely ignition, though, as mentioned.
There's a slim chance the injector on that cylinder might have blocked but they rarely cause trouble.
Kevin
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Thanks Kevin, can someone tell me the firing order so I know which is cylinder 2?
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Thanks Kevin, can someone tell me the firing order so I know which is cylinder 2?
No 1 is the one at front, 4 is rear...
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Cheers TB, just to confirm starts from 1 at front numerically to 4 at rear? ::)
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Cheers TB, just to confirm starts from 1 at front numerically to 4 at rear? ::)
Yes, so 2 is the 2nd from front.
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:y Gotcha........funny that plug was just about the cleanest out of all four :o
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funny that plug was just about the cleanest out of all four
It's had 40 miles of being hosed down with petrol and no firing! ;D
Kevin
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:-[ ::) Oh yes
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Right another update...........I have now changed the rocker cover gasket and o rings, cleaned the throttle body and breather pipes, fitted new plugs.........
Still doesn't fire at all............removed diss pack and tested each HT connector with one of the brand new plugs, all seem to be sparking fine.
I have checked all fuses both inside and out, all are fine....
HELP please the missus has been without a car for a week already and looks like at least another week to follow :-[
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OK So you've got a decent spark when cranking on all plugs?
Does the fuel pump run when you turn the ignition on?
If you push the plunger in the schraeder valve on the injector rail (have a few rags around it) do you get a spurt of fuel?
Any signs of fuel on the plugs when you've been trying to start it?
Kevin
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OK So you've got a decent spark when cranking on all plugs?
Does the fuel pump run when you turn the ignition on?
If you push the plunger in the schraeder valve on the injector rail (have a few rags around it) do you get a spurt of fuel?
Any signs of fuel on the plugs when you've been trying to start it?
Fuel pump appears to be running ok, the plunger you are referring to.....is this beneath a screw on cap, if so yes I did get a spurt of fuel when pushing in the needle valve.
Yes the plugs have fuel on them after cranking.
Something to add.....when cranking the engine doesn't appear to be turning over as normal and is not attempting to fire at all.
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Is the battery OK?
Maybe worth giving it a charge for a few hours. It may be that it's able to crank the car but not fire the plugs under compression (although, IME, if it'll crank the engine it'll fire). If there's fuel and spark it should run.
May also be worth cranking it over for a few seconds with the accelerator floored. This disables fuel, and if the engine has flooded, it will clear that. Try to start normally after doing this.
Kevin
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Thanks Kevin, it could possibley be flooded and I did not want to depress the throttle pedal in case I made it worse but that is interesting if you say flooring the throttle clears the excess fuel :y
I will put it on charge and try cranking it with the pedal to the floor.
Thanks
John
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Have put battery on charge, thought I would check codes again and am now getting P0110 - IAT Sensor Circuit Malfunction :-?
What does this mean?
Could it be a fault thrown up because I pulled every fuse out to check them?
:-[ Oops just checked, I hadn't reconnected the MAF plug ::)
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Is the battery OK?
Maybe worth giving it a charge for a few hours. It may be that it's able to crank the car but not fire the plugs under compression (although, IME, if it'll crank the engine it'll fire). If there's fuel and spark it should run.
May also be worth cranking it over for a few seconds with the accelerator floored. This disables fuel, and if the engine has flooded, it will clear that. Try to start normally after doing this.
Kevin
Many thanks Kevin :y , I left the battery on charge overnight to fully charge it.
Turned it over this morning and it just cranked over and over, floored the throttle pedal and after 4 or 5 seconds it fired and has been fine since.
I changed the oil and filter then flushed the coolant system so hopefully all should be well ;)
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:y
Running on all 4 now?
Kevin
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Yes sweet as a nut, thanks again :y :)
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Result :y - got there in the end :)