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VW Passat 2.0: carbon buildup in engine

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  • 27-07-2016 5:32pm
    #1
    tcow
    Closed Accounts Posts: 107 ✭✭


    Hi,

    I recently had to do a big job in my car (injectors, and oil pump), and apparently the cause was carbon build up in the engine.


    Just wondering, is there any preventive maintenance i can do , so it wont happen again?

    Is there anything i can mix with the diesel every now and then to clean it out, so as it wont build up again??
    Tagged:


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    #2
    punisher5112
    Registered Users Posts: 24,647 ✭✭✭✭punisher5112


    Diesel's need a good run and over revs at 2k or over for a good distance to clear out.

    Short journey driving not suitable.


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    #3
    3rdDegree
    Registered Users Posts: 1,261 ✭✭✭3rdDegree


    punisher5112 wrote: »
    Diesel's need a good run and over revs at 2k or over for a good distance to clear out.

    Short journey driving not suitable.

    My understanding is that they need to get a 20 to 30 minute run every now and again (I believe once a week or so at least) at between 2000 and 3000 revs. A run on the motorway should do it. For instance, I do a lot of city driving and unless I'm going away for the weekend, I take mine for a spin down the motorway at 120km/h for about half and hour or more every Saturday.


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    #4
    CiniO
    Registered Users Posts: 16,089 ✭✭✭✭CiniO


    Change oil regularly and use appropriate oil.

    Also what you were already advised not to hesitate with gas pedal, and rev the engine high for a good while from time to time surely can only help.

    After driving - especially at high revs - remember to let engine cool down for a while before turning engine off, as hot oil without circulation is known to carbonise - this can especially affect turbo.


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    #5
    tcow
    Closed Accounts Posts: 107 ✭✭tcow


    punisher5112 wrote: »
    Diesel's need a good run and over revs at 2k or over for a good distance to clear out.

    Short journey driving not suitable.

    I do 80km motorway driving every day


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    #6
    mikeecho
    Registered Users Posts: 5,077 ✭✭✭mikeecho


    Would dipetane help in preventing carbon build up ?


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    #7
    punisher5112
    Registered Users Posts: 24,647 ✭✭✭✭punisher5112


    It will happen as the exhaust gases are recirculated but will be helped by long drives to burn it out. 80k should do it good.
    Some say dipetane is OK others say doesn't do much.


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    #8
    BigCon
    Closed Accounts Posts: 1,836 ✭✭✭BigCon


    Curious as to where you buy your diesel?


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