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Ford focus mk 2 - Duratorq TDCi DW10 2.0 L // leakage/carbon cleaning
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72788
New User
Jul 8, 2023, 2:41 PM
Post #1 of 7
(766 views)
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Ford focus mk 2 - Duratorq TDCi DW10 2.0 L // leakage/carbon cleaning
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Long story short: I had a broken high pressure fuel pipe, replaced it, and in the process decided to replace the rocker cover gasket (which, I heard, needed periodic replacement, and was never replaced in my case). Shortly after, fuel started leaking, accumulating in the places between the cylinders (as you can see in picture 1). I kinda guess the mistakes I've made (including not using proper torque)...
Now, finally having some free time, I decided to redo the reparation, and removed (again) the cylinder head cover, which, in my case, is integral with the inlet manifold. Now, I have the following questions:
1. I want to clean the inlet manifold pipes (picture 2). With what should I clean them, and what method should I use?
2. Should I also clean the intake valves ? You can see that there's quite some carbon buildup (picture 3). What procedure should I use?
3. If the rocker cover gasket pieces (i.e. seals) are still good (relatively new), can I reuse them, of should I buy new ones ? (as the Haynes manual suggests ?)
Img 1: https://ibb.co/jhj5Vkf
Img 2: https://ibb.co/2c5JtrJ
Img 3: https://ibb.co/X8Yv1FF
Thanks in advance !
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Hammer Time
Ultimate Carjunky
/ Moderator
Jul 8, 2023, 4:11 PM
Post #2 of 7
(749 views)
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Re: Ford focus mk 2 - Duratorq TDCi DW10 2.0 L // leakage/carbon cleaning
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We don't really have any diesel techs here but because there is no fuel going through the intake manifold, common sense will tell you there is a problem with the fuel injectors or fuel supply lines.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Hammer Time
Ultimate Carjunky
/ Moderator
Jul 9, 2023, 2:11 PM
Post #4 of 7
(661 views)
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Re: Ford focus mk 2 - Duratorq TDCi DW10 2.0 L // leakage/carbon cleaning
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Because the intake manifold supplies air, not fuel. Fuel is injected behind the intake valve, directly into the cylinder.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
(This post was edited by Hammer Time on Jul 9, 2023, 2:12 PM)
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Hammer Time
Ultimate Carjunky
/ Moderator
Jul 9, 2023, 4:32 PM
Post #6 of 7
(638 views)
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Re: Ford focus mk 2 - Duratorq TDCi DW10 2.0 L // leakage/carbon cleaning
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You obviously created an issue with something in the area. I'm not there so I can't tell you what.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Jul 9, 2023, 10:30 PM
Post #7 of 7
(619 views)
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Re: Ford focus mk 2 - Duratorq TDCi DW10 2.0 L // leakage/carbon cleaning
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72788 > It's by chance somewhat "diesels" just didn't get too popular for personal cars in the US so few of us specialized in them.
You asked for cleaning things I say use so called carb cleaners it's an oil for fuel used mostly in large rig trucking ends up more efficient how many miles/kms you can get.
US like other places this oil is or was to thick it wouldn't burn well or thicken to a gel and didn't move without warming it up or additives to thin it out.
HIGH compression creates super high heat last split second add sprayed fuel hope to "atomize" it fires without a spark.
I agree with Hammer Time, you may have broken something or it's getting too worn out must keep that high compression of air or raw fuel just passes thru.
NO real training for this stuff unless it was a chosen field of study you wanted to take on left mostly to the trucking areas or real close a heating fuel.
With that it just wasn't popular for general public transportation so this site lacks lots of professionals with it with lots of hands on experience.
Best thing about it is it's much safer to store and transport isn't very explosive like petrol/gasoline,
It ends up more costly by a lot in the US year round needs costly additives to control it.
HIGH compression, high force of intake air is going to harder to control, Tom
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