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Thread: Can't start 1.9 cdti 2005 signum following filter change

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    Default Can't start 1.9 cdti 2005 signum following filter change

    Drawn a blank trying to start my car after changing the fuel filter. I had to replace the starter motor so removed the filter housing to make it a bit easier, thinking I might as well change the filter at same time. Left the pipes dangling for a couple of days, now having no joy trying to start it. Fuel is being ejected out of the filter OK, but I have loosened the injector feeds and also the union to the rail (directly from the pump) and there is no diesel being forced out when cranking the engine. I can hear the pump (I think its the pump?) when the ignition is switched on, also if I remove the output pipe off the filter housing it seems to be full of fuel. Nothing else has been touched, the engine management and maintenance lights are on when ignition is switched on but I think they are anyway? Unfortunately I can't get my OPCON working so no idea if I have any codes but logic suggests it must be air in the lines?? I understand this is supposed to be a self-bleeding system am I doing something wrong?? Struggling now any suggestions would be welcome, I don't fancy trying the brake cleaner squirted into the air intake trick or is it a good idea? I am also slightly concerned that I tipped the filter housing upside down to empty the diesel into a waste tank (for proper disposal) and unsure if I might have lost any parts from the water sensor (or pressure sensor?) in the bottom of the bowl, is there anything else other than the white plastic disc that seems to be loose in its housing that should be there?

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    Regular Member northpole's Avatar
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    Vehicle : Vectra C

    Trim : SXI limited edition

    Engine : 2.0 16v DTI

    Year : 2003

    Mileage : 140000

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    When you have problems like this it's best to tow start the car.... I know with social distancing and all that it'll be hard to get someone out to assist....

    But basically it is the fastest solution. The air will be bled out if you tow start. It also doesn't put any strain on the battery...


    Tow starting is done by having the car rolling at 30 mph and letting the clutch come up in 3rd gear...

    It should jump to live as soon as it's running back to neutral signal the tower and pull over where it is safe to do so...

    That should solve the problem

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    Regular Member michale_kid's Avatar
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    Check the crankshaft sensor bud they can easily be knocked out of place when changing starter motor or oil filter. If that's been knocked it won't start. Just plug it back in fully.

    Sent from my ONEPLUS A5000 using Tapatalk

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    Quote Originally Posted by northpole View Post
    When you have problems like this it's best to tow start the car.... I know with social distancing and all that it'll be hard to get someone out to assist....

    But basically it is the fastest solution. The air will be bled out if you tow start. It also doesn't put any strain on the battery...


    Tow starting is done by having the car rolling at 30 mph and letting the clutch come up in 3rd gear...

    It should jump to live as soon as it's running back to neutral signal the tower and pull over where it is safe to do so...

    That should solve the problem
    Thanks for your reply. Trouble is the car is now facing the wrong way down a closed off road!! I do have a spare heavy duty battery so I can just keep cranking it for ages do you think that might do it eventually?? Starter motor is new as well lol! Mind you don't know why i am worrying I won't be going anywhere in it anytime soon.....Is it worth keep cranking it with the injector pipes loosened off or a bit risky??

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    Quote Originally Posted by michale_kid View Post
    Check the crankshaft sensor bud they can easily be knocked out of place when changing starter motor or oil filter. If that's been knocked it won't start. Just plug it back in fully.

    Sent from my ONEPLUS A5000 using Tapatalk
    Thanks good thinking I will check it.

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    Regular Member Daywalker's Avatar
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    Trim : active

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    Also i know its supposed to self bleed but it wouldnt hurt i guess to try and brim the filter with diesel.

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    Regular Member northpole's Avatar
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    Vehicle : Vectra C

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    Engine : 2.0 16v DTI

    Year : 2003

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    Do not crank it with the injector pipes loose if you've already done that than with no result, close them up... than they and crank it with a heavy duty battery... but beat is to use jump leads of a running car. Even a 0.9 petrol will help maintain the power needed as long as it runs.

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    Quote Originally Posted by northpole View Post
    Do not crank it with the injector pipes loose if you've already done that than with no result, close them up... than they and crank it with a heavy duty battery... but beat is to use jump leads of a running car. Even a 0.9 petrol will help maintain the power needed as long as it runs.
    No idea what this sensor at the bottom is and if anything call fall out/off it if you invert the bowl?

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    Regular Member northpole's Avatar
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    Vehicle : Vectra C

    Trim : SXI limited edition

    Engine : 2.0 16v DTI

    Year : 2003

    Mileage : 140000

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    Quote Originally Posted by northpole View Post
    Do not crank it with the injector pipes loose if you've already done that than with no result, close them up... than they and crank it with a heavy duty battery... but beat is to use jump leads of a running car. Even a 0.9 petrol will help maintain the power needed as long as it runs.
    Let me rewrite it to much spelling mistakes in that:

    Do not crank it with the injector pipes off... it'll **** out everywhere because of the pressure. Especially if you've already done that with no results, than just tighten them up properly. Use another car and jump leads to keep cranking until it starts up. It doesn't matter if it is a petrol 0.9 small engine with a 50 amp battery as long as the car supplying the power is running. Remember the right way of jump starting. Battery plus clamps on your battery plus pole... battery minus on the battery of jump car goes to a ground on the engine on your car...


    That should give you enough cranking and starting power

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    Regular Member northpole's Avatar
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    Vehicle : Vectra C

    Trim : SXI limited edition

    Engine : 2.0 16v DTI

    Year : 2003

    Mileage : 140000

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    Quote Originally Posted by Paul from Derby View Post
    No idea what this sensor at the bottom is and if anything call fall out/off it if you invert the bowl?
    Afaik nothing should drop out it I don't own a cdti.

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