1st Gen R53 Cooper S Engine overheating, spewing coolant

Discussion in '1st Generation: 2002–06 R50, R53 & 2004–08 R52' started by Gizmo, Mar 2, 2013.

  1. Jason Montague

    Jason Montague New Member
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    :wink::wink::wink: To paraphrase 'The Old Sage', "Walnut them, they'll buff out.":lol::lol::lol:

    Jason
     
  2. Crashton

    Crashton Club Coordinator

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    I'd suggest changing your oil. It is quite possible that carb cleaner & other gunk has made its way into the sump.

    As far as those infectors go, those nice supple seals turn into hard plastic with age.
     
  3. Gizmo

    Gizmo New Member

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    I already changed the oil and coolant.

    Figured some of the chemicals would find their way into the supplies.
     
  4. Gizmo

    Gizmo New Member

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    #44 Gizmo, Mar 15, 2013
    Last edited: Mar 15, 2013
    A friend gave me his injectors since the new ones won't be here until Monday, they were removed at an early mileage for JCW ones.

    Got everything back together, cranked the engine but wouldn't start again. Pulled the plugs, 1 is dry, 2-4 are wet with a black/brown liquid (oil possibly).

    Shine a light into the spark plug tubes, cylinder 1 looks good, 2/4 are wet with a black liquid and possibly some deposits I can see parts of the piston head so it isn't completely covered in the liquid.

    I don't know what to do, I'm worried I have to take everything apart again to see what is causing this.

    Edit: also checked the spark and all four are sparking fine.
     
  5. Mr. Jim

    Mr. Jim Mudshark
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    Are you getting voltage to the injectors?
    Did you have JCW injectors before?
     
  6. Gizmo

    Gizmo New Member

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    I have stock injector now, I'm saying my friend replaced his with JCWs.


    Cylinder 4 has a lot of crap in the cylinder, the others don't look bad. I don't think it is oil because I just changed it and intue dipstick the oil is a clear and light brown.

    I hooked up the pressure gauge to the cylinders and now I have no compression in any of them. I'm going to take the valve cover off and inspect.
     
  7. Jason Montague

    Jason Montague New Member
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    :cornut: GOOD LUCK! Prayer sent.:Thumbsup:

    Jason
     
  8. Thumper460

    Thumper460 Active Member

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    NO Compression?? Camshaft would kill compression in all chambers, also the lack of oil on the rings ( though usually NOT all 4 cylinders).

    WHEN you put the head back on was the camshaft gear installed right where it came out?? DID you turn the engine over with the head off and MOVE the cam chain ??

    Keep in mind that the cam phase being out can cause piston to valve interface issues.. ( like Bend the valves) so be carefull.
    Let us know on the compression and camshaft.. cool??

    Thumper
     
  9. Gizmo

    Gizmo New Member

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    It's not going to be a good day...

    Took the valve cover off, noticed the timing chain sprocket was not straight...

    Unbolted the nut and here you go.
    :mad::mad::mad::mad:

    [​IMG]

    The 'key' on the camshaft stripped part of the metal on the timing chain sprocket. So now the timing is definitely off, even if I put the cam in the same position as the key hole on the sprocket, how would I know if it is even correct?

    So maybe the crap in the cylinder isn't the issue, this is why the engine isn't starting.

    This is not good.
     
  10. Gizmo

    Gizmo New Member

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    Thumper, the engine chain wasn't moved when the head was off.
     
  11. Thumper460

    Thumper460 Active Member

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    STOP!! Dont turn the engine over any more.. cool??

    Mark the chain and cam gear... remove the Cam!! All the valves now will be closed ( hopfully) Apply air to the cylinders and see if the air leaks out past the valves!! If they do.. then the head has bent valves!! IF they dont, then you passed a bullet!!

    Check to make sure the cam chain and the cam gear are friendly ( where they are SUSPOSED to be on alighn ment. IF they are not, then make them so... Remove the dampner/ the Belt tensionar/ and the timing cover... alighn the 2 crank gear and the 2 chain marks up.. do the same to the camgear and cam ( per manual) and start all over again.

    Let me know...

    Thumper
     
  12. Thumper460

    Thumper460 Active Member

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    Fantastic...!!

    I would remove the cam and do the air test!! Make sure the cylinders hold pressure. Squirt just a teaspoon of oil in each cylinder to help seal the rings... test for pressure. then install the cam with a new timing gear.

    When the damaged cam gear slipped, it still could have damaged the valves. So now eliminate that issue. Cool??

    SUX, Yes??

    Thumper
     
  13. Gizmo

    Gizmo New Member

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    I just ordered a new camshaft gear, it's not good when the parts guy knows your name.

    Will be ready for pickup tomorrow morning.

    I'll remove the cam now.
     
  14. Gizmo

    Gizmo New Member

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    Camshaft is removed...how do I go about pressure testing/putting air into it though?
     
  15. Gizmo

    Gizmo New Member

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    Wait, I got it. I'll use the compression tester adapter for the spark plug thread
     
  16. Thumper460

    Thumper460 Active Member

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    cool...
    Thumper
     
  17. Gizmo

    Gizmo New Member

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    So I put 35 PSI in each cylinder with the adapter...

    Cyl. 4 - good, Cyl. 3 - good, Cyl. 2 - good, Cyl. 1 - I hear a leak.

    Go up to the engine, don't hear anything but I still hear a leak. It was just the quick disconnect adapter on the compressor hose that I heard the leak from LOL.

    All four cylinders tested fine.
     
  18. Thumper460

    Thumper460 Active Member

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    Cool... you should be fine. I pull the ECU relay, and then after putting it all back.. I turn the engine over to make sure all is good, also it pumps up the lifters and oil pressure. THEN install the relay and Rock!!

    Have fun....

    Thumper
     
  19. grodenglaive

    grodenglaive New Member

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    this is very exciting, I hope it has a happy ending:)
     
  20. 1momini

    1momini New Member

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    Yes yes enjoying this post hope it all works out.
     

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