Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: Webby the Bear on 18 January 2012, 17:04:58
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Hi guys,
Please help I am real worried I've nackered my Mig :(
Basically changed all spark plugs today. Drivers side was easy, nothing having to be removed to get access. On passenger side I started with the awkward one at the back. To get to it I had to take off the brake servo lead (gold nut and lead directly above spark plug at the back) and also remove the ICV.
I finally got the plug out and new one in but then stupidly started the engine with the ICV out and brake servo cable off. it started and then went bang! so i finished the job, did everything back up and started it. no probs at all...
except, i was just checking everything and WHILST IT WAS OFF went bang again. i was like ''what the fek was that'.
took it for a spin. its running fine and idel is set at 600 rpm (although it wouldn't start first time)
but then coming back home it banged again. (3 in total)
the last time as i was driving i noticed it felt like it was under the car.
please say ive not fekked my precious miggy :'( :'( :'( :'( :'(
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Starting the car without the brake servo pipe attached to the plenum will not be the first person or last Steve.... I had a flame come out of the plenum once ;D just put it back on and tighten it up.
ICV not plugged in when started will more than likely put a code on the ECU....nothing to worry about though :y
Should not keep banging though so double check you haven't left anything else off :-*
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And check you dont have any tools missing from your tool kit. ::) ;)
Can you be any more descriptive regarding the bang Steve. ? Sounds a bit of a strange one tbh. :-\
Bang like a backfire/ gunshot type noise.Bang like something falling off....... ??
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And check you dont have any tools missing from your tool kit. ::) ;)
Can you be any more descriptive regarding the bang Steve. ? Sounds a bit of a strange one tbh. :-\
It will bang with the servo pipe not attached to the plenum... ;D
Check that you have put the icv back in properly, maybe the rubber is not in the plenum properly :y
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Still banging after he put the servo pipe back on though. :-\
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Starting the car without the brake servo pipe attached to the plenum will not be the first person or last Steve.... I had a flame come out of the plenum once ;D just put it back on and tighten it up.
ICV not plugged in when started will more than likely put a code on the ECU....nothing to worry about though :y
Should not keep banging though so double check you haven't left anything else off :-*
Thanks so much Daz. Fek, I've now got to go and clear this load out my trunks :-[ :-[ :-[
Everything's back. I checked, double checked, then triple checked as I'm paranoid. :y
Only things to note is that I couldn't get the bottom screw back in to the bracket that holds the ICV. The thing is jammed in there now but is still holding the thing in place. And besides I got a cable tie holding it in place.
Also, when i was moving various pipes out the way, I accidentally broke off a clip that was holding a pipe to another pipe (was very brittle and old)
What on Earth could this bloody bangin be... with the engine OFF!!
I thought I was going mad but my dear ol' mum was in the car the last time. She too was like ''what the fkcu''!
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Thanks Albs.... yes it's like some bugger was underneath and give the bottom of the car a smack with a hammer!
What on Earth have I done :'(
I got to go to see my Grandma tonight at her home. Should I really not be driving it til i've double checked this in the light?
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Let it idle with bonnet up, you may be able to pinpoint what area the "bang" is eminating from
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Let it idle with bonnet up, you may be able to pinpoint what area the "bang" is eminating from
That's the thing, Rob. When it went bang second time car was off and I literally had my head in the engine trying to do that screw up. I thought it came from the back like something had dropped off!
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If you have removed nothing more than the ICV and Brake Servo Pipe, it must be one or the other.
Is the rubber in which the ICV sits, sitting properly into the plenum?
Is it still doing it? Like Rob says run it at idle and see.
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If you have removed nothing more than the ICV and Brake Servo Pipe, it must be one or the other.
Is the rubber in which the ICV sits, sitting properly into the plenum?
Is it still doing it? Like Rob says run it at idle and see.
Yes mate, have done. and i've took it for a 20-30 minute run. as said running nice and bit more power but just these bangs.
oh i did remove the cable tray screws (two on top of plenum) so i could try and push this out the way as much as possible.
I think it's best I track back, take the cable tray off and try and get that screw back in cos thats the only odd thing. but it is sitting in the plenum correctly!
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If you have removed nothing more than the ICV and Brake Servo Pipe, it must be one or the other.
Is the rubber in which the ICV sits, sitting properly into the plenum?
Is it still doing it? Like Rob says run it at idle and see.
Yes mate, have done. and i've took it for a 20-30 minute run. as said running nice and bit more power but just these bangs.
oh i did remove the cable tray screws (two on top of plenum) so i could try and push this out the way as much as possible.
I think it's best I track back, take the cable tray off and try and get that screw back in cos thats the only odd thing. but it is sitting in the plenum correctly!
...but having said that i was working on that screw when the bang went when it was stationery :-\ :-\ :-\
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Make sure that plug lead no 6 is on the plug and dis pack properly. Its a short lead and when you pull it off the plug sometimes it moves on the dis pack as well
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Steve for goodness sake you seem to be getting in a pickle, chill for a bit have a cuppa. Then go with a torch and check properly what you have done. If you car was not making this banging before you started, but it is now... It is more than likely something you have done...
We can only go from what you are telling us.. So if you have removed the servo pipe from the plenum, plus removed the ICV, plus the screw you keep mentioning... Which I can only assume is the screw which holds the ICV rubber in place.... I would say you have got something wrong somewhere.
Check you have put the Brake servo pipe on properly.
Check you have the ICV fitted properly.
Check that the rubber that goes into the plenum is in properly, as this could be something to do with "the screw".
You have put the leads back onto the plugs properly?
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Make sure that plug lead no 6 is on the plug and dis pack properly. Its a short lead and when you pull it off the plug sometimes it moves on the dis pack as well
cheers pete. sorry is number 6 the awkward rear passenger one i take it?
thing is wouldnt the car running be crap? car is perfect and bit more power.... just this banging!!!!!
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Steve for goodness sake you seem to be getting in a pickle, chill for a bit have a cuppa. Then go with a torch and check properly what you have done. If you car was not making this banging before you started, but it is now... It is more than likely something you have done...
We can only go from what you are telling us.. So if you have removed the servo pipe from the plenum, plus removed the ICV, plus the screw you keep mentioning... Which I can only assume is the screw which holds the ICV rubber in place.... I would say you have got something wrong somewhere.
Check you have put the Brake servo pipe on properly.
Check you have the ICV fitted properly.
Check that the rubber that goes into the plenum is in properly, as this could be something to do with "the screw".
You have put the leads back onto the plugs properly?
Will do all of that Daz thanks. Sorry, just worried.
Will get back when i've checked all this :y
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Make sure that plug lead no 6 is on the plug and dis pack properly. Its a short lead and when you pull it off the plug sometimes it moves on the dis pack as well
cheers pete. sorry is number 6 the awkward rear passenger one i take it?
thing is wouldnt the car running be crap? car is perfect and bit more power.... just this banging!!!!!
It could missfire if not on properly, but could make a banging sound at the back like you mentioned earlier.
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When you were driving it, how long before the "bang" occured?
Whilst stationary, how long after switching off did you get the "bang"?
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Let it idle with bonnet up, you may be able to pinpoint what area the "bang" is eminating from
That's the thing, Rob. When it went bang second time car was off and I literally had my head in the engine trying to do that screw up. I thought it came from the back like something had dropped off!
Do you mean the engine wasn't running?
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Let it idle with bonnet up, you may be able to pinpoint what area the "bang" is eminating from
That's the thing, Rob. When it went bang second time car was off and I literally had my head in the engine trying to do that screw up. I thought it came from the back like something had dropped off!
Do you mean the engine wasn't running?
Yes Pete. I queried it as well :-\
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When you were driving it, how long before the "bang" occured?
Whilst stationary, how long after switching off did you get the "bang"?
First bang: when i started it up without brake servo or icv connected.
Second bang: around 30 mins after that whilst stationery.
Third bang: About 40 mins after the second... but this time on the move.
Ok, the leads are all definitely in! however, thinking about it, i did try and pull the rear passenger lead towards the front of the car (was just trying to do anything to et the bloody thing out the way!
So by the sounds of it I need to get to the diss-pac and make sure it's on properly.
Can i still drive it if thats the case?
cheers all - bit calmer now! ::) :y :y :y
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Let it idle with bonnet up, you may be able to pinpoint what area the "bang" is eminating from
That's the thing, Rob. When it went bang second time car was off and I literally had my head in the engine trying to do that screw up. I thought it came from the back like something had dropped off!
Do you mean the engine wasn't running?
That's right.
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Let it idle with bonnet up, you may be able to pinpoint what area the "bang" is eminating from
That's the thing, Rob. When it went bang second time car was off and I literally had my head in the engine trying to do that screw up. I thought it came from the back like something had dropped off!
Do you mean the engine wasn't running?
That's right.
Any kids nearby :-\ sounds like someone having a wind up whilst you're preoccupied. You know the sort of thing head under bonnet to look at something and some tw4t beeps the horn, or in your case thumps the side of the car :-\
Cars generally don't go bang on their own :y
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thanks taxi but absolutely no one about!
i'm going to check in daylight everything i've done but i'm pretty positive everythings back together.
however, just thinking about it i bet i've pulled a lead out the diss-pac bearing in mind i was pulling them about a bit (thanks to Daz and Elite pete for informing me.
i also read the guide about replacing a diss-pac and it says you may need the radio code......
that got me thinking.........is another possible indication of a loose lead to the diss-pac that the trip computer flickers? this happened but didnt think nowt about it.
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Sounds like the ICV has come out, usually happens after a flameout and can be very difficult to notice. Ram it home good n proper tiger ;D :y
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Sounds like the ICV has come out, usually happens after a flameout and can be very difficult to notice. Ram it home good n proper tiger ;D :y
lol cheers guffer.... i'm going out now with a huge hammer ;D ;D ;D ;D
(only kiddin') :y
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Hi all,
Thought I'd update on Miggy Miggy Bang Bang...
Went out for a run last night. No problems, no banging, idling spot on. Had a look under the bonnet last night and this morning (as i couldn't really see much with my crappy torch).
All is looking good. icv is all the way in and not going to move. Brake servo done up. cable tray back in place and two bolts done up to secure it.
only thing i noticed, and i dont know if this matters, is that the plastic cover tubing encasing the ICV cable (at the basck of the icv with the connector plug) is just a bit old and crap and the wires are exposed a bit. does this matter?
not trying to give myself stupid scenarios to worry myself with (cos im fairly sure daz dont want to have to do a ''there, there'' job on me again ;D ;D but i really can't see anything wrong (touch wood)
started her up, again idling fine. odd!
anyoine any thoughts on the icv connector wiring thing?
cheers for everyones help - its very much appreciated! :y :y :y :y
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ps, i'll double check the leads are correctly sitting on the S.P. wells at lunch :y
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Will be interested to hear the result Bear - a great thread which shows the Forum working at its best. :-* :-* :y
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Similar problem to mine Webby :'(
http://www.omegaowners.com/forum/index.php?topic=98304.0
I'm begining to think mine is the coilpack breaking down underload :-\
What condition was your plugs in when you changed them ?
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Thing is TG that's the odd thing. my revs are perfect, it's running great and idling spot on at 600rpm.
i'm going to pop another cable tie over the icv just for extra ''snugness''.
my old plugs were fine. bit of oil on the threads but other than that fine :)
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Checka nd double check the DIS pack connections as the plug leads for the 2-4-6 bank are not connected in the order you woudl expect.
Also consider its an ECu controled 6 pot so they will appear to idle okish even with a pot or two at low efficiency
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Thanks Mark. I will check those at weekend. I take it is ok to run prior to me checking if a lead has popped out the diss-pac?
I also have taken some photos. If anyone spots anything untoward please do say :y
The engine...
(http://i1226.photobucket.com/albums/ee402/webbybear1/DSC02835.jpg)
The ICV. Note the two cable ties on the left to aid it stopping in place. The one that's going across and over the cabletray screw is the one Daz put in and the second one round the back of the jubilee clip is one i popped on couple minutes ago...
(http://i1226.photobucket.com/albums/ee402/webbybear1/DSC02837.jpg)
(http://i1226.photobucket.com/albums/ee402/webbybear1/DSC02842.jpg)
(http://i1226.photobucket.com/albums/ee402/webbybear1/DSC02841.jpg)
Thr brittle clip that a bit broke off...still attached though
(http://i1226.photobucket.com/albums/ee402/webbybear1/DSC02840.jpg)
This is a pic from behind the ICV. The screw I couldn't get back in is wedged there but unscrewed to plenum. as said just couldnt get the bugger in but icv ''well attached'' even without it...
(http://i1226.photobucket.com/albums/ee402/webbybear1/DSC02839-1.jpg)
Managed to also get the icv wiring at the back, back into it's black and green caple pipe plastic...
(http://i1226.photobucket.com/albums/ee402/webbybear1/DSC02838.jpg)
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in pic 4, reatach that clip to the brake servo vac pipe, or you will have a hole in it in no time!
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in pic 4, reatach that clip to the brake servo vac pipe, or you will have a hole in it in no time!
Thanks Jimbob,
Does everything else look ok though? :)
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Cant see anything wrong there imo. :y
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Cant see anything wrong there imo. :y
Cheers Albs! I've popped the brake servo pipe back in to the clip as Jimbob says (pic 4).
It's not misfiring, in fact it's really noticably more powerful, is idling perfect and (touch wood) no more bangs!!!! i'm wondering if it was a backfire?
Going to see how it goes and if it does it again I'll check the diss-pac. Don't really see the need to check the diss-pac if it's not misfiring. but feel free to correct me if i'm wrong.
Thanks for all your help guys :y :y :y :y
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Feel free to pop it over in daylight, we'll clear out the codes you put in, and see if everything is sound.
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Feel free to pop it over in daylight, we'll clear out the codes you put in, and see if everything is sound.
Thanks TB... you free Sunday? just would love a bit of piece of mind due to the odd circumstances :y