Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: relluf on 20 October 2010, 17:16:24
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Hi after the first cold morning this morning the old bus struggled to start, she got going but it was touch n go , So I guess one or more heater plugs are goosed ,now I have a multi meter but not a clue how to test them , could some kind knowledgeable person help me out please by writing in plain speak what I need meter set on and where i put probes etc and what it should read? I guess I will manage changing them but is it normal to do all at the same time? Rang local dealer this morning and he reckoned £16 each is that about right or anyone got any other supplier they know of? chheers in advance,
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Hi after the first cold morning this morning the old bus struggled to start, she got going but it was touch n go , So I guess one or more heater plugs are goosed ,now I have a multi meter but not a clue how to test them , could some kind knowledgeable person help me out please by writing in plain speak what I need meter set on and where i put probes etc and what it should read? I guess I will manage changing them but is it normal to do all at the same time? Rang local dealer this morning and he reckoned £16 each is that about right or anyone got any other supplier they know of? chheers in advance,
I know nothing about TD Omegas, but when I had a glow plug go on my Astra TD last year the started great, but the EML came on as I set off for a few seconds. You need to check which glow plug has a completely different resistance reading form the rest. Disconnect the wiring/supply to the top of each plug and with the meter set on the highest value Ohms (http://reference.wolfram.com/mathematica/ref/character/Files/CapitalOmega.en/1.gif) touch the black lead to earth & the red to where you disconnected the 12 volt supply. Turn the dial till you get a meaningful reading, do this for each plug & look for the odd one(s) out. I just changed the failed plug, but changing them all wouldn't do any harm .... only your wallet :y
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Had a similar prob earlier this year, in all the snow/ice etc. Decided to change glowplugs, as first point of call.
If you are going to do them, do all 6 together, else you end up repeatedly taking off the manifold et al to get to them.
£16 each??? My local dealer wanted £9.50 + VAT each, but got some from E-Gay (6 brand new NGK, boxed, unopened) for £29.50 inc P&P.
job takes about an hour + to do them all, and you need a deep reach 12mm socket..
Hope this helps. :y
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Also replaced mine with gbay cheapies, £17.50 + PP for a set of 6. False economy to remove the manifold just to change a couple of plugs.
Careful, it is easy to drop the manifold nuts into the bowels of the engine.
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Thanks for your input.
Found the £17.50 ones on ebay doesn't say what make they are just top quality !!and they are local to me so maybe see if can go and pick some up, like you say if changing one I may as well do all together and hopefully that's all the issue is , she has been starting and running fine so I can only put it down to heater plugs do I need a deep socket because of the body length of the plug?
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Rang local dealer this morning and he reckoned £16 each [\quote]
Even if they don't last as long as the more expensive ones, you can still buy 5 sets for what your dealer was going to charge. :y
By the way not only did I lose some nuts but also my socket and ext bar. :'( :'( ;D ;D
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By the way not only did I lose some nuts but also my socket and ext bar. :'( :'( ;D ;D[/quote]
Cheers I will see if they are there when I do mine lol
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Re- "a deep reach 12mm socket."
Never done glowplugs yet, but I thought it required a 27mm window socket. ::)
DOH! Sorry, that is for the injectors. :-?
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Don`t discount the possibility that your car`s battery might be failing; the frosty morning would lower the available cranking voltage and consequently the glow-plug temp......perhaps checking it with another car/battery and connecting with jump leads to see if your car starts ok before buying new glowplugs. ;)
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Don`t discount the possibility that your car`s battery might be failing; the frosty morning would lower the available cranking voltage and consequently the glow-plug temp......perhaps checking it with another car/battery and connecting with jump leads to see if your car starts ok before buying new glowplugs. ;)
Your right it could be but it seems to spin over very well in fact had the battery been any poorer it would not have started as i had to keep winding to get her going and she only fired on the fourth or fith attempt by which time the power was getting low but enough to spin over at a good rate, also did not have our other car here swmbo had left already >:(
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Don`t discount the possibility that your car`s battery might be failing; the frosty morning would lower the available cranking voltage and consequently the glow-plug temp......perhaps checking it with another car/battery and connecting with jump leads to see if your car starts ok before buying new glowplugs. ;)
Your right it could be but it seems to spin over very well in fact had the battery been any poorer it would not have started as i had to keep winding to get her going and she only fired on the fourth or fith attempt by which time the power was getting low but enough to spin over at a good rate, also did not have our other car here swmbo had left already >:(
Hmm was the tank under 20 litres? anyone else thinking what im thinking? I know one or 2 of mine are dodgy, but it always starts second attempt then runs slightly off key for the first 2 seconds, must get round to doing them!!!
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i'd replace all the plugs but in the meantime turn ignition on a couple of times to give it a extra heat :y
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i'd replace all the plugs but in the meantime turn ignition on a couple of times to give it a extra heat :y
Yup, that's what I was doing before I changed the plugs. :y
Not along term solution though as it will shorten the life of the remaining working plugs.
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Don`t discount the possibility that your car`s battery might be failing; the frosty morning would lower the available cranking voltage and consequently the glow-plug temp......perhaps checking it with another car/battery and connecting with jump leads to see if your car starts ok before buying new glowplugs. ;)
Your right it could be but it seems to spin over very well in fact had the battery been any poorer it would not have started as i had to keep winding to get her going and she only fired on the fourth or fith attempt by which time the power was getting low but enough to spin over at a good rate, also did not have our other car here swmbo had left already >:(
Hmm was the tank under 20 litres? anyone else thinking what im thinking? I know one or 2 of mine are dodgy, but it always starts second attempt then runs slightly off key for the first 2 seconds, must get round to doing them!!!
Yes, another possibility, clogged filter in the lift pump. :y
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Don`t discount the possibility that your car`s battery might be failing; the frosty morning would lower the available cranking voltage and consequently the glow-plug temp......perhaps checking it with another car/battery and connecting with jump leads to see if your car starts ok before buying new glowplugs. ;)
Your right it could be but it seems to spin over very well in fact had the battery been any poorer it would not have started as i had to keep winding to get her going and she only fired on the fourth or fith attempt by which time the power was getting low but enough to spin over at a good rate, also did not have our other car here swmbo had left already >:(
Hmm was the tank under 20 litres? anyone else thinking what im thinking? I know one or 2 of mine are dodgy, but it always starts second attempt then runs slightly off key for the first 2 seconds, must get round to doing them!!!
Yes, another possibility, clogged filter in the lift pump. :y
or lift pump not lifting!! ;D
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Don`t discount the possibility that your car`s battery might be failing; the frosty morning would lower the available cranking voltage and consequently the glow-plug temp......perhaps checking it with another car/battery and connecting with jump leads to see if your car starts ok before buying new glowplugs. ;)
Your right it could be but it seems to spin over very well in fact had the battery been any poorer it would not have started as i had to keep winding to get her going and she only fired on the fourth or fith attempt by which time the power was getting low but enough to spin over at a good rate, also did not have our other car here swmbo had left already >:(
Hmm was the tank under 20 litres? anyone else thinking what im thinking? I know one or 2 of mine are dodgy, but it always starts second attempt then runs slightly off key for the first 2 seconds, must get round to doing them!!!
Yes, another possibility, clogged filter in the lift pump. :y
or lift pump not lifting!! ;D
Don't do that! My face is not used to laughing. ;)
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The simplest way to test your glow plugs is to take them out and connect each one across a good 12 volt battery, they should glow white hot within a few seconds. You usually find one is not performing and this will affect your starting especially on a cold morning. No need to replace the working ones!
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The simplest way to test your glow plugs is to take them out and connect each one across a good 12 volt battery, they should glow white hot within a few seconds. You usually find one is not performing and this will affect your starting especially on a cold morning. No need to replace the working ones!
A lot easier with a multi-meter on ohms ...... you won't burn your fingers either. ;)
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Hmm
was the tank under 20 litres? anyone else thinking what im thinking? I know one or 2 of mine are dodgy, but it always starts second attempt then runs slightly off key for the first 2 seconds, must get round to doing them!!![/quote]
i never (or rarely) let it go below 20 lt ,I did all the lift pump cleaning etc in early summer so should be ok but i did wonder that! started first time on the button yesterday and this morning , what a difference a few degrees of ambient temp make. I have ordered a set of the bay so will swap all at weekend and the attempt to test old ones to see if any are markedly better than others and keep as spares maybe.
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Hmm
was the tank under 20 litres? anyone else thinking what im thinking? I know one or 2 of mine are dodgy, but it always starts second attempt then runs slightly off key for the first 2 seconds, must get round to doing them!!!
i never (or rarely) let it go below 20 lt ,I did all the lift pump cleaning etc in early summer so should be ok but i did wonder that! started first time on the button yesterday and this morning , what a difference a few degrees of ambient temp make. I have ordered a set of the bay so will swap all at weekend and the attempt to test old ones to see if any are markedly better than others and keep as spares maybe.[/quote]
then agree should be doing g.plugs!! must do mine they are the originals!!! ;D
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The simplest way to test your glow plugs is to take them out and connect each one across a good 12 volt battery, they should glow white hot within a few seconds. You usually find one is not performing and this will affect your starting especially on a cold morning. No need to replace the working ones!
A lot easier with a multi-meter on ohms ...... you won't burn your fingers either. ;)
What reading should you get for a healthy glowplug?
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The simplest way to test your glow plugs is to take them out and connect each one across a good 12 volt battery, they should glow white hot within a few seconds. You usually find one is not performing and this will affect your starting especially on a cold morning. No need to replace the working ones!
A lot easier with a multi-meter on ohms ...... you won't burn your fingers either. ;)
What reading should you get for a healthy glowplug?
I can't remember now, but one of mine (4 pot Astra) was miles different from the other three. ;)
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you can pull the plug in the fuse box and test them, good ones will read 0 - 5 Ohms, fails will be open circuit, you can change them without taking the manifold off , it's fiddly, I had to use a nail bar to get my manifold off , then it's easy.
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you can pull the plug in the fuse box and test them, good ones will read 0 - 5 Ohms, fails will be open circuit, you can change them without taking the manifold off , it's fiddly, I had to use a nail bar to get my manifold off , then it's easy.
:-? Sorry mate not sure how that works - do you mean remove the fuse that protects the glowplugs -and then they can be checked in situ individually without removing them
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you can pull the plug in the fuse box and test them, good ones will read 0 - 5 Ohms, fails will be open circuit, you can change them without taking the manifold off , it's fiddly, I had to use a nail bar to get my manifold off , then it's easy.
:-? Sorry mate not sure how that works - do you mean remove the fuse that protects the glowplugs -and then they can be checked in situ individually without removing them
I've never seen a straight 6 diseasal lump, but you need to disconnect individual glowplugs to test them.
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You can test them with a multimeter set to lowest resistance. Ignition switched OFF.
Remove the wire from the top of the plug and put one lead from the meter on the top of the plug the threaded part where the wire came off and the other lead from the meter on the body of the plug or any good earth/0v.
A good plug will read about 1.3 Ohm. No reading or a much higher reading means fubar.
Although it possibly can be done. I would not like to try this with the manifold in situ. Too fiddly.
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You can test them with a multimeter set to lowest resistance. Ignition switched OFF.
Remove the wire from the top of the plug and put one lead from the meter on the top of the plug the threaded part where the wire came off and the other lead from the meter on the body of the plug or any good earth/0v.
A good plug will read about 1.3 Ohm. No reading or a much higher reading means fubar.
Although it possibly can be done. I would not like to try this with the manifold in situ. Too fiddly.
Thanks for that - I have'nt worked on an Omega diesel but presume its a similar set up to other cars and that all the plugs are connected with the common busbar that carries the supply to the plugs. I thought they had to be disconnected and checked individually as you described but was thrown by the earlier post regarding the fuse and thought I was missing something. Cheers
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.... I thought they had to be disconnected and checked individually as you described but was thrown by the earlier post regarding the fuse and thought I was missing something. Cheers
A bit like I said on the very first reply? ::) ::) ::) ;) :y
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Hi I'm in the process of writing a "how to" guide on 2.2dti glow plugs diagnosis. It is very much WIP at present and waiting for photos etc to be taken. ( I'm currently changing my central heating boiler and believe me the completion of this task must take priority)
Could be useful to you, if you have not already fixed it, despite your additional 2 pots. PM me if you would like a MS Word version of it.
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.... I thought they had to be disconnected and checked individually as you described but was thrown by the earlier post regarding the fuse and thought I was missing something. Cheers
A bit like I said on the very first reply? ::) ::) ::) ;) :y
:o I knew you were right all along - never doubted it!!!! ;D ;D ;D
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Hi I'm in the process of writing a "how to" guide on 2.2dti glow plugs diagnosis. It is very much WIP at present and waiting for photos etc to be taken. ( I'm currently changing my central heating boiler and believe me the completion of this task must take priority)Could be useful to you, if you have not already fixed it, despite your additional 2 pots. PM me if you would like a MS Word version of it.
i hope you are gas safe registered ;)
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Hi I'm in the process of writing a "how to" guide on 2.2dti glow plugs diagnosis. It is very much WIP at present and waiting for photos etc to be taken. ( I'm currently changing my central heating boiler and believe me the completion of this task must take priority)Could be useful to you, if you have not already fixed it, despite your additional 2 pots. PM me if you would like a MS Word version of it.
i hope you are gas safe registered ;)
If it's the same as Corgi was, you don't need to be ..... as long as you're not doing the job 'for financial gain' :y
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Hi I'm in the process of writing a "how to" guide on 2.2dti glow plugs diagnosis. It is very much WIP at present and waiting for photos etc to be taken. ( I'm currently changing my central heating boiler and believe me the completion of this task must take priority)Could be useful to you, if you have not already fixed it, despite your additional 2 pots. PM me if you would like a MS Word version of it.
i hope you are gas safe registered ;)
If it's the same as Corgi was,you don't need to be ..... as long as you're not doing the job 'for financial gain' :y
And don't make any connections to the gas supply :y
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Hi I'm in the process of writing a "how to" guide on 2.2dti glow plugs diagnosis. It is very much WIP at present and waiting for photos etc to be taken. ( I'm currently changing my central heating boiler and believe me the completion of this task must take priority)Could be useful to you, if you have not already fixed it, despite your additional 2 pots. PM me if you would like a MS Word version of it.
i hope you are gas safe registered ;)
If it's the same as Corgi was,you don't need to be ..... as long as you're not doing the job 'for financial gain' :y
And don't make any connections to the gas supply :y
Not as I understand it, and certainly not under Corgi rules. You could do the whole thing if you wanted, as long as you weren't being employed to do it ie for yourself.
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Had a similar prob earlier this year, in all the snow/ice etc. Decided to change glowplugs, as first point of call.
If you are going to do them, do all 6 together, else you end up repeatedly taking off the manifold et al to get to them.
£16 each??? My local dealer wanted £9.50 + VAT each, but got some from E-Gay (6 brand new NGK, boxed, unopened) for £29.50 inc P&P.
job takes about an hour + to do them all, and you need a deep reach 12mm socket..
Hope this helps. :y
Right quick update
Not sure how to do in an hour seemed to take me a while lomger but all changed today and starting much better would not fancy doing with intake manifold in place far to cramped, anyway job done thanks to all for all your help and input ,having looked at the old ones three are not reading so i guess goosed and three are reading 1.1 on meter but all very pitted and charred so needed doing.
thanks again.
andy
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Congratulations. Job well done. :y
Don't suppose you found my socket n' ext. ;D ;D
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SIGHS, really must do mine when i get back to spain!!!
well done bud good result there it seems :y