Cam chain fault then major problem.

Discussion in 'Engine' started by hotch743, Nov 1, 2012.

  1. hotch743

    hotch743 New Member

    Messages:
    9
    Joined:
    Sep 24, 2011
    Car:
    C180K Coupe
    Hello all, first post and “OH” need advice. Bought a 03 C180 with 71.000 on the clock no initial bad sounds, faults,drives well and has the MERCEDES renowned badge on the bonnet, and got it for a good price, what more could you want.
    1000 miles later a misfire, checked it all found nothing, then wouldn’t start, towed it to a merc specialized garage. They checked it out and told me timing CHAIN stretched,” what”. Had them fit a new chain and tensioner as they said that not all cam chain faults cause damage to the cam timing.
    £500 later still wouldn’t start, chain had jumped 2 teeth on inlet cam and one tooth on exhaust cam.
    Took it stripped top end all inlet valves bent all exhaust need grinding in, replaced inlet valves and guides, inspected piston heads, no deformation. Rebuilt engine with the help of a cam timing jig tool.
    Started, ran perfectly 10 months 1200 miles then engine management light and a knocking tapping sound from back of engine. Took to a known mechanics who used an inspection camera and told me that No 4 piston was scrapping the bore, was caused by valve hitting crown.
    So engine needs to come out then rebore and oversize pistons, on a Merc, pardon.
    Any help and ideas? Anyone removed an engine? Where would you recommend for engine work.
    Sorry for first post, but it takes a bit of believing.
     
  2. Dieselman

    Dieselman Banned

    Messages:
    34,206
    Joined:
    Jul 13, 2003
    Car:
    Peugeot 403 Convertible
    A very common fault on that engine. The chain wears, then the sprockets wear, then all hell breaks loose.
    While the head is off, check the valve guides are still in tight, they come loose and cause valves to wobble about and not seat.
     
  3. trapperjohn

    trapperjohn MB Club Veteran

    Messages:
    7,316
    Joined:
    Nov 19, 2008
    Location:
    Lancashire
    Car:
    124 300D 24V Estate
    Welcome to the forum Hotch 743. Sorry to hear of your problems. Tell us where you are in the country (a county will do it, if you are shy) and we can tell you a decent guy to sort your engine.
     
  4. OP
    OP
    hotch743

    hotch743 New Member

    Messages:
    9
    Joined:
    Sep 24, 2011
    Car:
    C180K Coupe
    Thanks trapperjohn, Live near Hull, East Yorks.
    How difficult/easy are the engines to remove and where can oversize pistons be found, I`ve been told nobody supplies oversize and that the piston bores are dry linners.
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.