any one had a cold starting problem with a 2.2 cdti omega,once started its no problem ,but if its left for any length of time back to square one, so far ive replaced the battery ,glow plugs ,all spill pipes ,fuel filter ,injector seals ,removed and cleaned inlet manifold and throttle housing finally fitted a non return valve between the filter and injection pump ,it seems to have the symtoms of fuel run back as in it has to be wound up for a mega long time before it will start. help! ps it seems to be worse the colder it gets

Never had a diesel cra, never worked on a diesel, and no nothing specific about diesel Migs, but I saw on here someone had a similar problem, and it could be the outside air temp sensor not working, making the glow plugs not stay on as long, hence the bad starting.

That is certainly a possibilty, and worth checking. Does the display on the dash give an accurate reading of the outside temp.

Another thought. Have you ever cleaned the filter on the lift pump in the fuel tank?

put your car nose down over the night and see how it starts

p.s. it is not cdti(comonrail) its just dti

Is the glow plug indicator on the dash lighting up when started from cold?

test the glow plugs are getting 12v for the appropriate time.(30 secs min cold).

i have a 51 plate  2.2dti and it has the same problems,
dont matter how you park it even nose down on a hill, seems like fuel is returning to tank and a right git to start, i start the car everyday even if i dont intend on using it and this seems to help a bit,
is there a how to on cleaning the filter in the tank?
im guesing the panel under the carpet in the boot gives you acces to it?
if you find the problem please post it as its been driving me mad for ages! ;)

http://www.omegaowners.com/forum/YaBB.pl?num=1251298222

you should also check the one way valve in the injection pump or mount an additional one.

p.s. have you replaced all your hosing??

geoffr70 wrote on 08. Jan 2011 at 01:59:

Never had a diesel cra, never worked on a diesel, and no nothing specific about diesel Migs, but I saw on here someone had a similar problem, and it could be the outside air temp sensor not working, making the glow plugs not stay on as long, hence the bad starting.

cheers mate ill look into that

bigdavy60 wrote on 09. Jan 2011 at 20:46:

Boditza wrote on 09. Jan 2011 at 15:09: http://www.omegaowners.com/forum/YaBB.pl?num=1251298222 you should also check the one way valve in the injection pump or mount an additional one. dont know if there is a one way valve on inj pump, but ive fitted a run back valve on the feed between the fuel filter and inj pump p.s. have you replaced all your hosing?? yes ive replaced all spill pipes thanks

Kneepad wrote on 08. Jan 2011 at 02:34:

That is certainly a possibilty, and worth checking. Does the display on the dash give an accurate reading of the outside temp.

yes it seems to do so thanks

greenfingers 79 wrote on 09. Jan 2011 at 13:26:

i have a 51 plate  2.2dti and it has the same problems, dont matter how you park it even nose down on a hill, seems like fuel is returning to tank and a right git to start, i start the car everyday even if i dont intend on using it and this seems to help a bit, is there a how to on cleaning the filter in the tank? im guesing the panel under the carpet in the boot gives you acces to it? if you find the problem please post it as its been driving me mad for ages! ;)

will do mate i know what you are goin through cheers

tidla wrote on 08. Jan 2011 at 19:44:

test the glow plugs are getting 12v for the appropriate time.(30 secs min cold).

will do mate, where do you get the idea of 30secs glow plug time as im pretty sure they dont stay on that long cheers

Kneepad wrote on 08. Jan 2011 at 02:37:

Another thought. Have you ever cleaned the filter on the lift pump in the fuel tank?

ive been told by a vauxhall man that it does not have a lift pump in tank ? thanks ill look into it

Does your external temp sensor work? On your dash display does it show an accurate outside temperature?

fergy wrote on 08. Jan 2011 at 17:44:

Is the glow plug indicator on the dash lighting up when started from cold?

yes its the yellow one with coils. cheers

Welung666 wrote on 09. Jan 2011 at 21:12:

Does your external temp sensor work? On your dash display does it show an accurate outside temperature?

yes it seems to do so.cheers

Boditza wrote on 08. Jan 2011 at 10:07:

put your car nose down over the night and see how it starts p.s. it is not cdti(comonrail) its just dti

ok will try that with the dti  ha ha cheers

Welung666 wrote on 09. Jan 2011 at 21:12:

Does your external temp sensor work? On your dash display does it show an accurate outside temperature?

yes it seems to work fine thanks

bigdavy60 wrote on 09. Jan 2011 at 21:08:

Kneepad wrote on 08. Jan 2011 at 02:37: Another thought. Have you ever cleaned the filter on the lift pump in the fuel tank? ive been told by a vauxhall man that it does not have a lift pump in tank ? thanks ill look into it

I would have a look under the boot carpet for a circular access plate held by four screws.
I'll be surprised if the 2.2 doesn't have one but then mine's a 2.5

bigdavy60 wrote on 09. Jan 2011 at 20:57:

tidla wrote on 08. Jan 2011 at 19:44: test the glow plugs are getting 12v for the appropriate time.(30 secs min cold). will do mate, where do you get the idea of 30secs glow plug time as im pretty sure they dont stay on that long cheers

the plugs should continue to heat according to the temp of the engine.
the dash light does not generally continue for the same period as the plugs.

they take at least 5 secs to fully heat let alone warm the combustion pocket chamber air.

once started, they stay lit for a short period.

the atual time of glow needs to be measured to rule out glow plug relay.

have you left your car nose down?? if it is tilted forward and starts fine then you have to replace(again) the spill pipes.

Kneepad wrote on 09. Jan 2011 at 23:42:

bigdavy60 wrote on 09. Jan 2011 at 21:08: Kneepad wrote on 08. Jan 2011 at 02:37: Another thought. Have you ever cleaned the filter on the lift pump in the fuel tank? ive been told by a vauxhall man that it does not have a lift pump in tank ? thanks ill look into it I would have a look under the boot carpet for a circular access plate held by four screws. I'll be surprised if the 2.2 doesn't have one but then mine's a 2.5

im going to have a nosey at it now , i guess it will be the same access plate for the fuel sender unit ,ill let you know. cheers

Boditza wrote on 10. Jan 2011 at 06:36:

have you left your car nose down?? if it is tilted forward and starts fine then you have to replace(again) the spill pipes.

ive got quite a steep drive so have turned car around now to see if it makes any difference cheers

tidla wrote on 09. Jan 2011 at 23:57:

bigdavy60 wrote on 09. Jan 2011 at 20:57: tidla wrote on 08. Jan 2011 at 19:44: test the glow plugs are getting 12v for the appropriate time.(30 secs min cold). will do mate, where do you get the idea of 30secs glow plug time as im pretty sure they dont stay on that long cheers the plugs should continue to heat according to the temp of the engine. the dash light does not generally continue for the same period as the plugs. they take at least 5 secs to fully heat let alone warm the combustion pocket chamber air. once started, they stay lit for a short period. the atual time of glow needs to be measured to rule out glow plug relay.

will have a look at that thanks

bigdavy60 wrote on 10. Jan 2011 at 13:12:

Boditza wrote on 10. Jan 2011 at 06:36: have you left your car nose down?? if it is tilted forward and starts fine then you have to replace(again) the spill pipes. ive got quite a steep drive so have turned car around now to see if it makes any difference cheers

let us know if it does... i bet it would.

thought that and still sat there screaming at 6am late for work trying to get my omega started, had to jump it in the end

Boditza wrote on 10. Jan 2011 at 15:08:

bigdavy60 wrote on 10. Jan 2011 at 13:12: Boditza wrote on 10. Jan 2011 at 06:36: have you left your car nose down?? if it is tilted forward and starts fine then you have to replace(again) the spill pipes. ive got quite a steep drive so have turned car around now to see if it makes any difference cheers let us know if it does... i bet it would.

well it did not make any diference atall the darn thing wont start, so im thinking the fuel cant be running back up a hill ?

greenfingers 79 wrote on 10. Jan 2011 at 20:41:

thought that and still sat there screaming at 6am late for work trying to get my omega started, had to jump it in the end

yup same again wont start facing down my steep drive way duh

bigdavy60 wrote on 10. Jan 2011 at 13:06:

Kneepad wrote on 09. Jan 2011 at 23:42: bigdavy60 wrote on 09. Jan 2011 at 21:08: Kneepad wrote on 08. Jan 2011 at 02:37: Another thought. Have you ever cleaned the filter on the lift pump in the fuel tank? ive been told by a vauxhall man that it does not have a lift pump in tank ? thanks ill look into it I would have a look under the boot carpet for a circular access plate held by four screws. I'll be surprised if the 2.2 doesn't have one but then mine's a 2.5 im going to have a nosey at it now , i guess it will be the same access plate for the fuel sender unit ,ill let you know. cheers

cant seem to loosen the big locking ring on top of tank to have a nosey at stand pipe filter any hints? also ive started the car (very hard) turned it around and faced it down my steep drive its still the same, so im thinking the fuel cant be running back up to the tank

check for leaks around the injectors, from injection pump to injectors, fuel filter to injection pump. if there aren't any leaks i would guess its the injection pump itslef. but after you try all things posted here take the car to a specialist and see what they say :)

Boditza wrote on 11. Jan 2011 at 06:57:

check for leaks around the injectors, from injection pump to injectors, fuel filter to injection pump. if there aren't any leaks i would guess its the injection pump itslef. but after you try all things posted here take the car to a specialist and see what they say :)

cheers mate will keep you posted

bigdavy60 wrote on 10. Jan 2011 at 22:45:

bigdavy60 wrote on 10. Jan 2011 at 13:06: Kneepad wrote on 09. Jan 2011 at 23:42: bigdavy60 wrote on 09. Jan 2011 at 21:08: Kneepad wrote on 08. Jan 2011 at 02:37: Another thought. Have you ever cleaned the filter on the lift pump in the fuel tank? ive been told by a vauxhall man that it does not have a lift pump in tank ? thanks ill look into it I would have a look under the boot carpet for a circular access plate held by four screws. I'll be surprised if the 2.2 doesn't have one but then mine's a 2.5 im going to have a nosey at it now , i guess it will be the same access plate for the fuel sender unit ,ill let you know. cheers cant seem to loosen the big locking ring on top of tank to have a nosey at stand pipe filter any hints? also ive started the car (very hard) turned it around and faced it down my steep drive its still the same, so im thinking the fuel cant be running back up to the tank

There is a Vauxhall tool for undoing this, but carefull use of a piece of wood as a drift and a hammer will soon shift it.

since i changed my battery it has happened less often, maybe it is an electrical gremlin, try a booster pack on the battery when trying to start to see if it makes any difference?
dont you just love omegas? lol

You do have more than 20 litres of Diesel in the tank???

greenfingers 79 wrote on 11. Jan 2011 at 16:31:

since i changed my battery it has happened less often, maybe it is an electrical gremlin, try a booster pack on the battery when trying to start to see if it makes any difference? dont you just love omegas? lol

ive renewed the battery with a 75 a/h power bull one which canks the engine over no problem for long periods, have also tried using jump leads at same time but the old miggy wont start till its ready cheers, and yes i really love my car ha ha

Agemo wrote on 11. Jan 2011 at 22:10:

You do have more than 20 litres of Diesel in the tank???

yes i actually topped tank up with 25 quid as ive heard that because its not got a fuel pressure pump you need a good volume of fuel, as ive said ive had no luck even facing car down the drive ,today we gave it the slightest spray of easy start and it fired up instantly , this was so strange considering it never even tried to fire winding it up with the key cheers

have you tryed a code reader?? it might be something stored from all that cranking

I agree with Boditza. Try reading the codes. As far as I remember there are only 2 or 3 codes relevent to pre heating, as follows.
P 1694- Glow plug indicator lamp/ wiring fault
P 1694 - Has another explanation that I have forgotten, but it is associated with the Glow plug indicator lamp
P 1635 - Mal function in glow plug heating  and control circuits.

The first is pretty self explanitory and the third can account for one or more glow plugs open circuit, wiring problems or glow plug control module fubared or just about any other pre heater malfunction other than the indicator bulb/ wiring.

It is not unknown to have all four glow plugs fubared and  the car will still start quite easilly in warm weather.  They are easy to test - pull off the caps (they have a release clip) and they should read about 1 ohm tested to earth in situ with a meter. If you have any that are higher resistance they are fubared.

Glow plug control module sits in the big black triagular plastic box on top of your battery.You are looking for a finned aluminium box about 9cm by 4cm right in the bottom of the triangular box. Part is common to several GM cars and is often held in stock by a decent dealer. GM# 55354141

IIRC you have changed the battery, so will have disturbed this module? It may be worth getting it out and checking all contacts are good, but see what the codes indicate first. When I had this problem I noticed that on distrurbing this plastic box, my starting problem disappeared, but returned a week later. 

PS  2.2Dti has no lift pump

if there is no lift pump then whats beneath that cap in the trunk?? i tryed to remove it but on eof the screws was stuck :((

Park it on a hill and keep the tank 1/3rd full? Surely not part of the original design brief  :P

I only know a bit about my old volvo penta and having checked the glow plugs I would next slacken the union where fuel feeds to the injectors to see if fuel pushes out when you crank it. Whether thats feasible on on Omega I don't know. Beware it should be under some pressure.

Might be worth a call to someone like this? http://www.ecutesting.com/vauxhall_bosch_vp44_diesel_pum.html



Steve

Boditza wrote on 12. Jan 2011 at 06:42:

have you tryed a code reader?? it might be something stored from all that cranking

yeh my mate is a vaux electrician and has all the latest updates for all vx cars on his laptop,we put tech 2 on several times and no trouble codes come up, he thinks i should strip the job down again incase ive nicked an injector seal. oh no 

Boatboy wrote on 12. Jan 2011 at 09:16:

Park it on a hill and keep the tank 1/3rd full? Surely not part of the original design brief  :P I only know a bit about my old volvo penta and having checked the glow plugs I would next slacken the union where fuel feeds to the injectors to see if fuel pushes out when you crank it. Whether thats feasible on on Omega I don't know. Beware it should be under some pressure. Might be worth a call to someone like this? http://www.ecutesting.com/vauxhall_bosch_vp44_diesel_pum.html Steve

almost impossible  to get on the inj pipes because of spill pipes etc, might have another go cheers

Boditza wrote on 12. Jan 2011 at 09:05:

if there is no lift pump then whats beneath that cap in the trunk?? i tryed to remove it but on eof the screws was stuck :((

you have the diesel feed and return pipes and a cicular access plate thats welded onto the tank with rust  and a locking ring which so far i cant move,this gives access to the fuel gauge sender unit and stand pipe which i assume has a small fine mesh on it, never the less i think if the mesh was dirty it would cause fuel starvation as in no power or lack of acceleration rather than a starting problem like this, cheers

your problem is most likely between pump and engine. the 2,2dti is sensitive when it comes to empty fuel tank. Air in the fuel system can cause damage to the injection pump. That's why the vehicle must never be driven till the fuel tank is empty. try towing it to start and then look for smoke under the bonnet and see where it leaks

fergy wrote on 12. Jan 2011 at 08:25:

I agree with Boditza. Try reading the codes. As far as I remember there are only 2 or 3 codes relevent to pre heating, as follows. P 1694- Glow plug indicator lamp/ wiring fault P 1694 - Has another explanation that I have forgotten, but it is associated with the Glow plug indicator lamp P 1635 - Mal function in glow plug heating  and control circuits. The first is pretty self explanitory and the third can account for one or more glow plugs open circuit, wiring problems or glow plug control module fubared or just about any other pre heater malfunction other than the indicator bulb/ wiring. It is not unknown to have all four glow plugs fubared and  the car will still start quite easilly in warm weather.  They are easy to test - pull off the caps (they have a release clip) and they should read about 1 ohm tested to earth in situ with a meter. If you have any that are higher resistance they are fubared. Glow plug control module sits in the big black triagular plastic box on top of your battery.You are looking for a finned aluminium box about 9cm by 4cm right in the bottom of the triangular box. Part is common to several GM cars and is often held in stock by a decent dealer. GM# 55354141 IIRC you have changed the battery, so will have disturbed this module? It may be worth getting it out and checking all contacts are good, but see what the codes indicate first. When I had this problem I noticed that on distrurbing this plastic box, my starting problem disappeared, but returned a week later.  PS  2.2Dti has no lift pump

as in my reply to boditza my mate is a vaux spark and has done all the elecrical tests a few times , he says its got to be mechanical and thinks i should strip it down again and check the injector seals have not been damaged whilst rebuilding , he says it happened alot in the main dealership, ie customer got car back only to find when it was parked on a gradient it would not start, after this the garage wouldnt return the customers car untill they left the cars front wheels on the ramp and lifted up as high as safely possible also leaving the car overnight to make sure the fuel didnt run back ,oh no im going to have to do it all again.

then you should change your mechanic!!! the injector seals can be a problem but when those are gone it doesn't matter if its uphill downhill or flat because its under pressure and it will leak no matter what

Boditza wrote on 12. Jan 2011 at 13:51:

your problem is most likely between pump and engine. the 2,2dti is sensitive when it comes to empty fuel tank. Air in the fuel system can cause damage to the injection pump. That's why the vehicle must never be driven till the fuel tank is empty. try towing it to start and then look for smoke under the bonnet and see where it leaks

the car will start without towing it just takes for ever, any way i think ill have to strip it down and renew the spill pipes again also remove and check the injector seals are ok , well if the main dealer technicians can make a mistake then surely i can , cheers will let you know how i get on will get to it on thurs/fri

bigdavy60 wrote on 12. Jan 2011 at 22:54:

Boditza wrote on 12. Jan 2011 at 14:06: then you should change your mechanic!!! the injector seals can be a problem but when those are gone it doesn't matter if its uphill downhill or flat because its under pressure and it will leak no matter what so from what you are saying that is exactly the case uphill , down hill or flat its still the same, do you also think i should take the injector seals out again to check that they havnt been nipped during the rebuild, oh one other thing im sorry i cant change the mechanic im doing all the donkey work myself, id need to remorgage the house to pay a garage i think ,but hey im doin my best ,well the wife thinks so any way ha ha ?

i was talking about your "vaux spark guy" who said that it is up hill or down hill from injector seals. try to change them again.. get Opel TIS and you won't get them wrong... try to start the car and carefully watch the injectors for any smoke rising up from them

Boditza wrote on 13. Jan 2011 at 07:01:

i was talking about your "vaux spark guy" who said that it is up hill or down hill from injector seals. try to change them again.. get Opel TIS and you won't get them wrong... try to start the car and carefully watch the injectors for any smoke rising up from them

thanks for that,i guess ill have to dismantle it again and inspect them for damage, ps whats opel tis is it a lube to stop seals catching when you slide injectors into place?

TIS is Techincal Information Sistem.. it is like a service manual for all opel or vauxhall cars.. google it

Boditza wrote on 13. Jan 2011 at 08:33:

TIS is Techincal Information Sistem.. it is like a service manual for all opel or vauxhall cars.. google it

thanks for all the advise ive had from the forum i will get back to you all when i get a result ,it might just take a little time to do so cheers

well worth cleaning the filter on the pick up pump in the tank.
just done mine and it was caked in crap and surely restricting the fuel suply,
20 min job hardest part was getting the outer ring off but now with that cleaned and the fuel filter changed which was a right bast&*d as space is very limited she is running sweet as a nut for now, filled the fuel housing with 70/30 diesel magig to diesel just to give the ingectors a good clean

Glad to hear you found a pump in the fuel tank. I was beginning have doubts.   :y

greenfingers 79 wrote on 15. Jan 2011 at 13:03:

well worth cleaning the filter on the pick up pump in the tank. just done mine and it was caked in crap and surely restricting the fuel suply, 20 min job hardest part was getting the outer ring off but now with that cleaned and the fuel filter changed which was a right bast&*d as space is very limited she is running sweet as a nut for now, filled the fuel housing with 70/30 diesel magig to diesel just to give the ingectors a good clean

so there is a pump in the tank right??

there certainly is

greenfingers 79 wrote on 15. Jan 2011 at 13:03:

well worth cleaning the filter on the pick up pump in the tank. just done mine and it was caked in crap and surely restricting the fuel suply, 20 min job hardest part was getting the outer ring off but now with that cleaned and the fuel filter changed which was a right bast&*d as space is very limited she is running sweet as a nut for now, filled the fuel housing with 70/30 diesel magig to diesel just to give the ingectors a good clean

ill get back to it on tuesday mate, was it your self who had the same problems as me when starting ?

Boditza wrote on 15. Jan 2011 at 21:16:

greenfingers 79 wrote on 15. Jan 2011 at 13:03: well worth cleaning the filter on the pick up pump in the tank. just done mine and it was caked in crap and surely restricting the fuel suply, 20 min job hardest part was getting the outer ring off but now with that cleaned and the fuel filter changed which was a right bast&*d as space is very limited she is running sweet as a nut for now, filled the fuel housing with 70/30 diesel magig to diesel just to give the ingectors a good clean so there is a pump in the tank right??

well well well i hope this is it this time guys, cant wait to get the tank open.

Kneepad wrote on 15. Jan 2011 at 20:56:

Glad to hear you found a pump in the fuel tank. I was beginning have doubts.   :y

   ill let you know how it goes mate fingers crossed          

yes was my 2.2dti with starting problems and the lifter pump in the tank is exactly the same as posted pics for the 2.5td
20 min job :y

greenfingers 79 wrote on 17. Jan 2011 at 14:52:

yes was my 2.2dti with starting problems and the lifter pump in the tank is exactly the same as posted pics for the 2.5td 20 min job :y

where are these pics posted mate

bigdavy60 wrote on 17. Jan 2011 at 22:37:

greenfingers 79 wrote on 17. Jan 2011 at 14:52: yes was my 2.2dti with starting problems and the lifter pump in the tank is exactly the same as posted pics for the 2.5td 20 min job :y where are these pics posted mate

Way up above in another post, here they are again:

http://www.omegaowners.com/forum/YaBB.pl?num=1251298222

Kneepad wrote on 17. Jan 2011 at 22:50:

bigdavy60 wrote on 17. Jan 2011 at 22:37: greenfingers 79 wrote on 17. Jan 2011 at 14:52: yes was my 2.2dti with starting problems and the lifter pump in the tank is exactly the same as posted pics for the 2.5td 20 min job :y where are these pics posted mate Way up above in another post, here they are again: http://www.omegaowners.com/forum/YaBB.pl?num=1251298222

yeah very good info there mate ill get stuck into that tomorow, lets hope we get a result watch this space. cheers

Fergy wrote

Quote:

I agree with Boditza. Try reading the codes. As far as I remember there are only 2 or 3 codes relevent to pre heating, as follows. P 1694- Glow plug indicator lamp/ wiring fault P 1694 - Has another explanation that I have forgotten, but it is associated with the Glow plug indicator lamp P 1635 - Mal function in glow plug heating  and control circuits. The first is pretty self explanitory and the third can account for one or more glow plugs open circuit, wiring problems or glow plug control module fubared or just about any other pre heater malfunction other than the indicator bulb/ wiring. It is not unknown to have all four glow plugs fubared and  the car will still start quite easilly in warm weather.  They are easy to test - pull off the caps (they have a release clip) and they should read about 1 ohm tested to earth in situ with a meter. If you have any that are higher resistance they are fubared. Glow plug control module sits in the big black triagular plastic box on top of your battery.You are looking for a finned aluminium box about 9cm by 4cm right in the bottom of the triangular box. Part is common to several GM cars and is often held in stock by a decent dealer. GM# 55354141 IIRC you have changed the battery, so will have disturbed this module? It may be worth getting it out and checking all contacts are good, but see what the codes indicate first. When I had this problem I noticed that on distrurbing this plastic box, my starting problem disappeared, but returned a week later. PS 2.2Dti has no lift pump

greenfingers 79 wrote on 17. Jan 2011 at 14:52:

yes was my 2.2dti with starting problems and the lifter pump in the tank is exactly the same as posted pics for the 2.5td 20 min job :y

Shomething wrong here shurely? :-/ :-/ :-/

See earlier post.

BigDavy's Vauxhall man told him there was no lift pump in the tank.  ;)

Kneepad wrote on 17. Jan 2011 at 23:30:

See earlier post. BigDavy's Vauxhall man told him there was no lift pump in the tank.  ;)

hi guys i have opened the tank , guess what there is def no pump, we have a fuel gauge sender unit , a swirl pot , and a filter on the end of the pick up pipe which is totally covered in thick black gunge, it looks identical to the pictures posted for the 2.5 but no fuel pump in the housing or wiring i may add,however im going to clean the whole thing up and reasemble it surely this must have been restricting the fuel flow in some way,ill leave the car over night to see if this does the job,fingers tightly crossed.  [smiley=undecided.gif] [smiley=undecided.gif] [smiley=undecided.gif]
ps is it possible some 2.2,s have the pump and some dont?

Shackeng wrote on 17. Jan 2011 at 23:09:

Fergy wrote Quote: I agree with Boditza. Try reading the codes. As far as I remember there are only 2 or 3 codes relevent to pre heating, as follows. P 1694- Glow plug indicator lamp/ wiring fault P 1694 - Has another explanation that I have forgotten, but it is associated with the Glow plug indicator lamp P 1635 - Mal function in glow plug heating  and control circuits. The first is pretty self explanitory and the third can account for one or more glow plugs open circuit, wiring problems or glow plug control module fubared or just about any other pre heater malfunction other than the indicator bulb/ wiring. It is not unknown to have all four glow plugs fubared and  the car will still start quite easilly in warm weather.  They are easy to test - pull off the caps (they have a release clip) and they should read about 1 ohm tested to earth in situ with a meter. If you have any that are higher resistance they are fubared. Glow plug control module sits in the big black triagular plastic box on top of your battery.You are looking for a finned aluminium box about 9cm by 4cm right in the bottom of the triangular box. Part is common to several GM cars and is often held in stock by a decent dealer. GM# 55354141 IIRC you have changed the battery, so will have disturbed this module? It may be worth getting it out and checking all contacts are good, but see what the codes indicate first. When I had this problem I noticed that on distrurbing this plastic box, my starting problem disappeared, but returned a week later. PS 2.2Dti has no lift pump greenfingers 79 wrote on 17. Jan 2011 at 14:52: yes was my 2.2dti with starting problems and the lifter pump in the tank is exactly the same as posted pics for the 2.5td 20 min job :y Shomething wrong here shurely? :-/ :-/ :-/

it gets stranger by the day ,no pump in my tank ,please see my reply to kneepad mmmm?

ok maybe it werent a pump :o :o :o :o :o
but looked similar to the 2.5td pictures.
didnt completely strip just cleaned filter off the bottom.
since ive done that there is a strange clicking noise coming from the tank or near it, primer pump perhaps but does not stop untill car is started?