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C200k 1.8 271 engine

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by Doo-da, Nov 10, 2012.

  1. Doo-da

    Doo-da New Member

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    Your Mercedes:
    C200k 2003 1.8 271
    New memeber saying hi with a question for the techs on here..

    Just aqquired a 53plate c200 k 1.8 with a misfire, was too cheap to let it slip away in all honesty...

    History of the car is,one owner, serviced on time by the same garage since new, with oe parts , cost hasnt been an issue until now.,

    Has run fine for its 164k miles, until 3 weeks ago.

    The car starts on the button and runs perfect until warm, then the misfire appears, ticks over sweet, but under load it misfires on cyl 1 .

    Parts fitted to try to cure it before i bought it are

    4x new bosch coil packs
    new plugs
    New upstream llambda sensor
    new Breather hose from block to inlet man

    Throttle body has been cleaned out, and an inlet cleaner run thru whilst running.
    Theres no traces of oil in the loom at all.

    Only 2 codes stored are misfire on cyl 1 and mixture adaption limits reached

    ANy ideas guys


    daz
     
  2. Cole@MBS

    Cole@MBS Forum Supporter Authorised Forum Supporter

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    Your Mercedes:
    124 300 CE 24 Coupe, 209 240 CLK
    Sticking valve in the head, was such a big problem when this engine first come out. Still on going to this day!! Head rebuild is the only cure........
     
  3. OP
    Doo-da

    Doo-da New Member

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    Your Mercedes:
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    OOh... not what i wanted to hear,,, what sort of job is taking the heads off on these.

    Very confident in doin it myself , new chain requiered aswell?... and whats required to be done to the head, just a regrind of the valves or new guides, seats cut?

    daz
     
  4. Steve@Avantgarde

    Steve@Avantgarde Forum Supporter Authorised Forum Supporter

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    Your Mercedes:
    C220CDI AMG Line Premium, SLR McLaren Roadster, SL55 & C32AMG
    Also stretched timing chain will cause this fault and another very common issue, did one friday.
     
  5. OP
    Doo-da

    Doo-da New Member

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    Its fine when cold which is whats throwing me.
     
  6. Steve@Avantgarde

    Steve@Avantgarde Forum Supporter Authorised Forum Supporter

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    1 test to do is to take off the rocker cover and time it up. If its bang on then its what Cole said for sure.
     
  7. OP
    Doo-da

    Doo-da New Member

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    Thanks for the replys guys...

    Is it much of a job to time these up?. never had to do a chain before, but done loads of cambelts on other cars....
     
  8. Steve@Avantgarde

    Steve@Avantgarde Forum Supporter Authorised Forum Supporter

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    No its easy, remove the rocker cover first of all, there is a mark on each camshaft which lines up with mark on the sprockets the crank times up with a mark on the timing cover with OT on the crank pulley.

    There is a locking tool that locks the cams but you wont need it to check the timing marks.
     
  9. OP
    Doo-da

    Doo-da New Member

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    JOb for the weekend then. will report back with my findings...

    Do these suffer with injector problems at all as a guy at a local garage says he has had the same sypmtoms on other cars and it was blocked injectors.. :confused:
     
  10. Steve@Avantgarde

    Steve@Avantgarde Forum Supporter Authorised Forum Supporter

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    Never seen one with a failing injector. Stretched chains and sticking valves are par for the course on these engines.
     
  11. OP
    Doo-da

    Doo-da New Member

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