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C4 help

  • 04-05-2015 8:50pm
    #1
    Jonny1gixer
    Registered Users, Registered Users 2 Posts: 18 ✭


    Hi to all
    I'm new on here and I have a C4 1.6 hdi as much as I enjoy driving the car. I have had an issue with a while with it. it is sluggish when cold and when it warms up it gets sooty black smoke from it. I have no idea what this could be but have heard a few horror stories. Can anyone shine some light on this to help.
    Thanks in advance


Comments

  • #2
    porsche boy
    Registered Users, Registered Users 2 Posts: 1,560 ✭✭✭porsche boy


    Does the engine light come on at all? Best thing is to drop into your local mechanic for a diagnostic. From what your saying, black smoke is usually over fueling or Boost leak.


  • #3
    Jonny1gixer
    Registered Users, Registered Users 2 Posts: 18 ✭Jonny1gixer


    porsche boy wrote: »
    Does the engine light come on at all? Best thing is to drop into your local mechanic for a diagnostic. From what your saying, black smoke is usually over fueling or Boost leak.

    Light only comes on for about an hour then goes off but the problem is still there when the light goes out. I'm going to get it checked out tomorrow as I mostly use it for work and bringing my kid to school.


  • #4
    demanufactured
    Closed Accounts Posts: 5,756 ✭✭✭demanufactured


    Has it been serviced on time every time with the correct oil?
    They suffer from turbo issues if not minded.


  • #5
    Jonny1gixer
    Registered Users, Registered Users 2 Posts: 18 ✭Jonny1gixer


    demanufactured wrote: »
    Has it been serviced on time every time with the correct oil?
    They suffer from turbo issues if not minded.

    It was only serviced in February and the mechanic only used oil from main dealer. His words skimp on oil and get ready to replace the turbo


  • #6
    martinr5232
    Registered Users, Registered Users 2 Posts: 2,298 ✭✭✭martinr5232


    Jonny1gixer wrote:
    It was only serviced in February and the mechanic only used oil from main dealer. His words skimp on oil and get ready to replace the turbo

    Sounds like hes on the ball.

    Its possible you have glow plugs gone they wont effect the starting but could cause your issues.


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  • #7
    Jonny1gixer
    Registered Users, Registered Users 2 Posts: 18 ✭Jonny1gixer


    martinr5232 wrote: »
    Sounds like hes on the ball.

    Its possible you have glow plugs gone they wont effect the starting but could cause your issues.

    I'm hoping it's nothing major like that as funds are tight at the mo with insurance. It's my biggest worry I'll get a bill for it and it would be outside my finances to clear on short notice


  • #8
    crosstownk
    Registered Users, Registered Users 2 Posts: 12,863 ✭✭✭✭crosstownk


    Quite possibly a faulty EGR valve. Common enough fault with that engine.
    Untitled Image




  • #9
    Jonny1gixer
    Registered Users, Registered Users 2 Posts: 18 ✭Jonny1gixer


    crosstownk wrote: »
    Quite possibly a faulty EGR valve. Common enough fault with that engine.

    An EGR I don't mind I know it's a common fault with a lot of diesels so that would be a relief if it was an EGR


  • #10
    demanufactured
    Closed Accounts Posts: 5,756 ✭✭✭demanufactured


    martinr5232 wrote: »
    Sounds like hes on the ball.

    Its possible you have glow plugs gone they wont effect the starting but could cause your issues.

    Glow plugs WOULD affect starting.


  • #11
    martinr5232
    Registered Users, Registered Users 2 Posts: 2,298 ✭✭✭martinr5232


    demanufactured wrote:
    Glow plugs WOULD affect starting.


    No they wouldnt ive seen four glow plugs gone and modern cars still start perfectly.


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  • #12
    Jonny1gixer
    Registered Users, Registered Users 2 Posts: 18 ✭Jonny1gixer


    martinr5232 wrote: »
    No they wouldnt ive seen four glow plugs gone and modern cars still start perfectly.

    I heard older diesels glow plugs caused a lot of starting issues but newer diesels I'm at a loss to many electronics for my liking


  • #13
    martinr5232
    Registered Users, Registered Users 2 Posts: 2,298 ✭✭✭martinr5232


    Jonny1gixer wrote:
    I heard older diesels glow plugs caused a lot of starting issues but newer diesels I'm at a loss to many electronics for my liking


    Older diesels would get very hard to start with one or two plugs gone in vold weather but modern diesels glowplugs are used for keeping emmissions down so may not even work till the engine is running.


  • #14
    Jonny1gixer
    Registered Users, Registered Users 2 Posts: 18 ✭Jonny1gixer


    martinr5232 wrote: »
    Older diesels would get very hard to start with one or two plugs gone in vold weather but modern diesels glowplugs are used for keeping emmissions down so may not even work till the engine is running.

    I didn't know that about the newer diesels


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