Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: garyv6 on 05 January 2008, 21:23:32
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hello all! im going to try my best to explain this fault with my bloody omega! when i fire her up and drive i have no probs, its just the usual rocket! but after a mile or so when she starts to warm up she looses power splutters and the autobox dont know where it is unless i hammer my foot down! i thought it was a dirty air filter so i took it out just to check but shes the same! ive been loosing water from the header tank recently with no visible leaks and the oil filer cap is full of mayo! (short journeys most of the time but its pretty bad) any ideas please???
cheers
gary
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Is the engine management light on and are there any fault codes?
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no mate! nothing! :y
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how often do you have to fill the water up?
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hello all! im going to try my best to explain this fault with my bloody omega! when i fire her up and drive i have no probs, its just the usual rocket! but after a mile or so when she starts to warm up she looses power splutters and the autobox dont know where it is unless i hammer my foot down! i thought it was a dirty air filter so i took it out just to check but shes the same! ive been loosing water from the header tank recently with no visible leaks and the oil filer cap is full of mayo! (short journeys most of the time but its pretty bad) any ideas please???
cheers
gary
If your oil filer cap is full of Mayo then you might have a head gasket or two gone :(
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Does the engine management light work when switching on ign?
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Several possibilities ... you say losing coolant but no sign of loss .. have you checked thoroughly the back face of the engine ?? This is where the Heater Bypass Valve lives .. a known failure point .. which can leak all over the DIS pack which them corrodes and breaks down under load. From your description of just getting warm.. it would also be about this time that the HBV operates and may well be leaking water onto the DIS which could also cause HT problems.
The mayo could be lots of short journeys where the oil never gets hot , or could be an oil cooler failure but as you only do short journeys its probably not.
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i lose about 4 inches of water every week or two! the engine light works fine when i turn on the ignition! i drive ten miles to work on a morning and i get a little mayo but the last two weeks ive hardly used it so its quite bad! the longer i drive at the moment the worse it gets! if i drive cold to the shop and back its fine!
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Any limitation in engine REVs ?
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yes! it struggles to rev like its choking!
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Fuel filter, or blocked exhaust.
Worth checking for plug wells for oil....
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new fuel filter and exhaust recently! dont think its had a service for a long time though!
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Sounds to me buddy like a fuel problem, ie when on choke it's fine, but when warm & off choke it buggers about but is ok if you cane it.
Just an thought & an avenue
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what if theres oil in the plug wells???
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what if theres oil in the plug wells???
That will cause a misfire.
Though if it hasn't been serviced it a long time, servicing would be a bloody good place to start!
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i know will try and raid my penny jar as im fu***ng skint after crimbo! how much is the parts from vauxhall? ps, theres no mayo in the dipstick so i dont think its a head fault! :y
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include the crank sensor also in your list..You will not regret..
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crank sensor???????
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yep..its vital for the engine..And looking at your model 96, it will be on the way if not changed before..
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whats its job? and what does it tell you?
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giving the crank positions to the ECU ..When broken will be late to change..Nearly 40 -50 £ in UK..
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thanks for that mate :y will keep it in mind after i service her! was thinking of just taking it to a garage and plug it in to the fault finder machine but not sure that will work as i have no engine warning lights on!
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Still there may be codes from before..
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I think a more methodical approach is due here ...
1. Paperclip test for problems ...
http://www.omegaowners.com/forum/YaBB.pl?num=1189022687
2. Find where loss of coolant is occuring and cure .. either HBV or Oil Cooler at worst ... header tank/lid at best .. :)
3. Check Plug Wells .. if contaminated ...
http://www.omegaowners.com/forum/YaBB.pl?num=1152564281
http://www.omegaowners.com/forum/YaBB.pl?num=1159298765
http://www.omegaowners.com/forum/YaBB.pl?num=1152598350
4. If you have problems starting or a Crank sensor eror code (19 I think ? )
http://www.omegaowners.com/forum/YaBB.pl?num=1174321688
Once that is all sorted then a 50 mile run including 40 miles of motorway cruising.. then chack oil for mayo .. it'll have probably all gone :)
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good stuff entwood :y im on a mission now to find the problem tomorrow as im back to work monday and cant afford the old dog to break down! ive had loads of cars in the past and this is the only one whom has let me down!! >:(
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note also if DIS is faulty will not store any code..
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hey! im pretty clever with cars but whats a bloody DIS?? [smiley=lolk.gif]
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hey! im pretty clever with cars but whats a bloody DIS?? [smiley=lolk.gif]
Distributorless Ignition System ie Coil Pack
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V6 does not have coil/distributor as old fashioned cars .. the DIS pack is controlled by the ECU and has connections for the plug leads on it .. under instructions from the ECU it generates and distributes the HT to the plugs.
It is ....
1. Damned awkward to get to ( especially with hands the size of mine)
2. Damned expensive for what it is.
3. Prone to contamination ( and subsequent failure - water and HT don't mix well) from leaking HBV or other bits .. :(
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thats funny you should mention that as it seems like a ignition/electric fault! its a complex car compare to what ive had before (mainly turbo diesel 4x4) so i cant get my head around it!
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V6 does not have coil/distributor as old fashioned cars .. the DIS pack is controlled by the ECU and has connections for the plug leads on it .. under instructions from the ECU it generates and distributes the HT to the plugs.
It is ....
1. Damned awkward to get to ( especially with hands the size of mine)
2. Damned expensive for what it is.
3. Prone to contamination ( and subsequent failure - water and HT don't mix well) from leaking HBV or other bits .. :(
Exactly..
And if you want to be sure of the car before any expense try
compression test..
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>:( >:( >:(the whole car is only worth about 500 quid! is it worth all this shite?? but i love it and i think its better than a bmw!
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a second hand car is as good as the previous owner :-/
experience teach me :-X
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They are a good car, had our previous one for 7 years, almost trouble free, decided to upgrade, bad idea!!!!!!!!!!!!!!11
Very similar probs with my ebay purchase, adorning the drive since September. Drives fine when cold misses and splutters when warm making it dangerous to drive.
Have done crank and cam sensor, oil in plugs; new gasket plugs and leads, no eml light but still misses, have a new Dis to fit when a bit warmer.
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anyway think positive..A compression test will tell you the condition of the engine..
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your motor is in good nick .. just lacking TLC .. you need to make up for lost care .. so a little time/money spent sorting these problems .. THEN a full and proper service .. and repeat that frequently .. and the car will run like a dream.
Quick question as an example ... when was the last oil/filter change ?? most folk on here do one evry 5000 miles .. nothing like the book figure ... why ?? it is probably the best and cheapest preventative maintance you can do .. and with a trade card ( which costs £20 ) will only cost about £20 !! £20 every 6 months ? peanuts for the benefit it gives :)
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well! the car is in very good nick! under the body looks like a 5 year old car, no rust on the ball joints or anything! it has no history and i think the last owners has treated it like an old dog! its just running like s@@t and is eating fuel like a 747! i think its worth sorting though as its like a rocket when in good form but i wish i had a manual box!
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Instead of D try 1,2,3 sequence..But be very carefull not break the autobox..
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done that! it seems to be ok when i use 2! when in D it just dies and looses power! it was always ok i D in any condition but now the autobox is all over the place because of the engine!
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done that! it seems to be ok when i use 2! when in D it just dies and looses power! it was always ok i D in any condition but now the autobox is all over the place because of the engine!
sorry dont know much about autoboxes..May be someone with more knowledge can comment on that..
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im just thinking of more reasons for this problem! about six weeks ago i had a bad fuel leak and found a badly corroded fuel filter! all i did was replace the filter (and lost loads of fuel in the process! did i need to de pressure the system first? maybe ive got an air block in the system!
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I'm thinking breathers and or a vacuum leak... mayo will collect if crankcase gasses are not being vac'd away.. the water loss may be a red herring.. a set of plugs and an oil change are the cheapest must first, along with a compresion test. If poor vacuum it could lead to strange / thumpy gear changes etc
Hope this helps.... DC ;)
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I hav eseen this a couple of times with a failing heater bypass valve....as the coolant heats up, the pressure increases adn it fires a fine jet of water/steam across the ignition setup.....so check the HBV.
Dont get changing willy nilly items, approach it systematicaly checking items as you go.