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Post by yamar1 on May 15, 2015 17:53:24 GMT 1
afternoon all, im looking to replace an injector seal on my focus 1.8 tdci as have the black tar around the injector and fumes in the car. it is number 4 injector and car is running fine. its a job i have not tackled before so just wondering if any members have any tips, advice on the best way to do the job and remove injector. i know il need a copper sealing washer but it is advised to change the injector retaining bolt and fuel pipe i know common rail runs high pressure is it necessary to renew these also? advice appreciated thanks.  |
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Post by Karl on May 15, 2015 19:03:42 GMT 1
afternoon all, im looking to replace an injector seal on my focus 1.8 tdci as have the black tar around the injector and fumes in the car. it is number 4 injector and car is running fine. its a job i have not tackled before so just wondering if any members have any tips, advice on the best way to do the job and remove injector. i know il need a copper sealing washer but it is advised to change the injector retaining bolt and fuel pipe i know common rail runs high pressure is it necessary to renew these also? advice appreciated thanks. It's a job an d I y can tackle if you go about it with the right precautions Alłow a few minutes for rail pressure to drop ( if your sure go for a cup of tea ) Cleanliness is vital for fuel repairs , so any openings really need to be sealed Yes you'll need a new cooper seal,and high pressure fuel pipe. There only meant to be 1 time use And shouldn't be reused (though you'd be surprised the number of garages who over see this ) Technically the bolt should be replaced to. And I'd also change the leak of pipe seal if it looks anything but perfect (these can often leak after being disturbed) Be careful not to lose the retaining spring to , they can ping off into the darkness Oh and don't put a wire bush or attempt to clean the injector tip . At most clean around the injector body The injector maybe tight to remove , but access is good on these and lucky don't seize in place like other engines mostly because it's an cast iron block. I will look up the torque for the bolt |
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Post by yamar1 on May 15, 2015 19:39:16 GMT 1
afternoon all, im looking to replace an injector seal on my focus 1.8 tdci as have the black tar around the injector and fumes in the car. it is number 4 injector and car is running fine. its a job i have not tackled before so just wondering if any members have any tips, advice on the best way to do the job and remove injector. i know il need a copper sealing washer but it is advised to change the injector retaining bolt and fuel pipe i know common rail runs high pressure is it necessary to renew these also? advice appreciated thanks. It's a job an d I y can tackle if you go about it with the right precautions Alłow a few minutes for rail pressure to drop ( if your sure go for a cup of tea ) Cleanliness is vital for fuel repairs , so any openings really need to be sealed Yes you'll need a new cooper seal,and high pressure fuel pipe. There only meant to be 1 time use And shouldn't be reused (though you'd be surprised the number of garages who over see this ) Technically the bolt should be replaced to. And I'd also change the leak of pipe seal if it looks anything but perfect (these can often leak after being disturbed) Be careful not to lose the retaining spring to , they can ping off into the darkness Oh and don't put a wire bush or attempt to clean the injector tip . At most clean around the injector body The injector maybe tight to remove , but access is good on these and lucky don't seize in place like other engines mostly because it's an cast iron block. I will look up the torque for the bolt |
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Post by yamar1 on May 15, 2015 19:41:28 GMT 1
many thanks for the help again karl, does the black tar make it much more dificult to remove and is it best to do the job with the engine hot or cool?
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Post by Karl on May 15, 2015 19:47:30 GMT 1
many thanks for the help again karl, does the black tar make it much more dificult to remove and is it best to do the job with the engine hot or cool? Not sure if warm or cold will make a difference Yes the black carbon can make it more difficult to remove. Try soaking with some maintance spray/carb/egr type cleaner or Coca cola !! For big builds you'll need to chip away at it with a screwdriver etc... |
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Post by yamar1 on May 15, 2015 20:03:50 GMT 1
many thanks for the help again karl, does the black tar make it much more dificult to remove and is it best to do the job with the engine hot or cool? Not sure if warm or cold will make a difference Yes the black carbon can make it more difficult to remove. Try soaking with some maintance spray/carb/egr type cleaner or Coca cola !! For big builds you'll need to chip away at it with a screwdriver etc... cheers. lastly, does the existing copper sealing washer come out ok and would i need to recut the seat using a seat cutter www.ebay.co.uk/itm/BERGEN-7-Piece-Diesel-Injector-Seat-Cutter-Cleaner-Tool-Set-5533-/251955731853?pt=LH_DefaultDomain_3&hash=item3aa9bb5d8d and any issues starting the car again with the fuel pipe being renewed, does it need bled or is it ok to tighten it all up before starting the car? |
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Post by Karl on May 15, 2015 20:16:11 GMT 1
Wouldn't worry about having to recut injector seat. You'd have the head off ideally anyway if you where doing that ...
We use a special tube with a wire bush head to clean the seat, as you won't a clean rag and screwdriver should do the trick
Yes forgot can be a bitch to bleed.
Can't picture the pump return pipe on these , but as it's just the one injector your doing you may well just get away with out bleeding
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Post by yamar1 on May 15, 2015 20:26:27 GMT 1
Wouldn't worry about having to recut injector seat. You'd have the head off ideally anyway if you where doing that ... We use a special tube with a wire bush head to clean the seat, as you won't a clean rag and screwdriver should do the trick Yes forgot can be a bitch to bleed. Can't picture the pump return pipe on these , but as it's just the one injector your doing you may well just get away with out bleeding champion, great advice once again. gona do the job next fri il post an update hopefully with good news. |
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Post by yamar1 on May 22, 2015 16:24:54 GMT 1
Done the job today took a couple of hours as i took it easy. Little trouble getting the old washer out the head so pushed a hex bit into it to get it out. Leaknoff retaining clip sprung into the abiss but i had a spare.all in all not a bad job and touch wood seems like it has sealed. Thanks for the tips karl.
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Post by Karl on May 22, 2015 20:36:03 GMT 1
Told you so
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Post by avalon on Apr 9, 2016 18:50:54 GMT 1
afternoon all, im looking to replace an injector seal on my focus 1.8 tdci as have the black tar around the injector and fumes in the car. it is number 4 injector and car is running fine. its a job i have not tackled before so just wondering if any members have any tips, advice on the best way to do the job and remove injector. i know il need a copper sealing washer but it is advised to change the injector retaining bolt and fuel pipe i know common rail runs high pressure is it necessary to renew these also? advice appreciated thanks. Hello, I have the same problem ... 1,8tdci focus 2008 and black tar and fumes inside.... Today, I desmantled the black plastic connector on the top of the injector, than I unscrewed upper part of the injector because it seemed, the problem is there, but I didnt find there any seal... I have screw it back but it leaks allmost more... What to do now? Do I need to remove whole injector and change the copper seal underneath? What was the black tar before? seal??? thanks in advance Lubo |
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Post by Rhubarb on Apr 9, 2016 19:10:13 GMT 1
afternoon all, im looking to replace an injector seal on my focus 1.8 tdci as have the black tar around the injector and fumes in the car. it is number 4 injector and car is running fine. its a job i have not tackled before so just wondering if any members have any tips, advice on the best way to do the job and remove injector. i know il need a copper sealing washer but it is advised to change the injector retaining bolt and fuel pipe i know common rail runs high pressure is it necessary to renew these also? advice appreciated thanks. Hello, I have the same problem ... 1,8tdci focus 2008 and black tar and fumes inside.... Today, I desmantled the black plastic connector on the top of the injector, than I unscrewed upper part of the injector because it seemed, the problem is there, but I didnt find there any seal... I have screw it back but it leaks allmost more... What to do now? Do I need to remove whole injector and change the copper seal underneath? What was the black tar before? seal??? thanks in advance Lubo You'll probably need a new injector now as you have undone the wrong joint.. You should have removed the complete injector, there's a copper washer at the bottom.. The injector seat will need re-cutting and then a new washer installed. The black tar is soot/carbon blowing by the copper seal/seat.. |
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Post by avalon on Apr 9, 2016 19:24:42 GMT 1
Thank you for advice. I think It will be better to visit some profesionals... May I drive the car with this problem without further damage?
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Post by Rhubarb on Apr 9, 2016 20:07:39 GMT 1
Thank you for advice. I think It will be better to visit some profesionals... May I drive the car with this problem without further damage? Hard to say, depends on how badly it's leaking and how far you need to travel  |
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remmington
Apprentice
Owns Spark Eroder
Posts: 4,960
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Post by remmington on Apr 9, 2016 21:27:10 GMT 1
Thank you for advice. I think It will be better to visit some profesionals... May I drive the car with this problem without further damage? Hard to say, depends on how badly it's leaking and how far you need to travel HARD TO SAY! The following words: Come to mind! Fire! Hydraulic! Dropped nozzle! Fire: I have seen two burnt out cars after service work at other garages to high pressure diesel system pipework. Hydraulic: I have read a report where a AA man removed the injector drive plug to diagnose a misfire and subsequently filled the cylinder up and bent a conrod. Dropped nozzle: Local Ford main dealer put a new injector in a three month old car under warranty, took it for a test drive and the injector nozzle went thru the piston. |
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