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Thread: 4200 misfire

  1. #1
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    I stupidly rinsed off some engine degreaser with water, and now I have a misfire!
    It seems like one or two cylinders are not firing, car starts easily and ticks over at 1000rpm, but pulling away is lumpy and down on power. At cruise it is un-noticeable and mpg is 22.3 at a constant 60mph.
    pressing the pedal at 60mph and engine is rough.
    Any help please?.. I know, I am an idiot!
    Andrew

    Light travels faster than sound,That's why some people appear bright until you hear them speak.
    4200
    Microplas Mistral
    EB50
    Rochdale GT
    Raleigh Runabout, Metallic red

  2. #2
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    Quote Originally Posted by daglocks View Post
    I stupidly rinsed off some engine degreaser with water, and now I have a misfire!
    It seems like one or two cylinders are not firing, car starts easily and ticks over at 1000rpm, but pulling away is lumpy and down on power. At cruise it is un-noticeable and mpg is 22.3 at a constant 60mph.
    pressing the pedal at 60mph and engine is rough.
    Any help please?.. I know, I am an idiot!
    one or more coil packs probably have water in them
    current vehicles:

    2007 maserati gransport LE - nero/nero
    2005 maserati 4200 coupe cambiocorsa - blue/avorio

  3. #3
    Senior Member safrane's Avatar
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    When the motor is warm but not too hot see if you can remove the coil packs and leave off for the warmth to dry out any damp in them.
    Peter
    06 Gransport LE - Nero Carbonio & Black
    05 4200 CC face lift - Gerigio Alfieri & Tan - Sold; Now lives in France
    03 4200 CC revised - Sebring Blue & Gray - Sold; Now regularly used as a TV car.

  4. #4
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    Thanks, will try
    Andrew

    Light travels faster than sound,That's why some people appear bright until you hear them speak.
    4200
    Microplas Mistral
    EB50
    Rochdale GT
    Raleigh Runabout, Metallic red

  5. #5
    Hook up a reader and it will tell you which cylinder. And the coils have the cylinder numbers taped to them. Then s simple job of swapping the coils to test. In case it’s a plug.

  6. #6
    Senior Member philw696's Avatar
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    Light travels faster than sound.
    Do you have access to compressed air ?
    Ex Technician for Wanganui Motors Ford and Mazda.
    Technician for Fredco Automasters Auckland.
    Technician for Auckland Maserati and Lotus in New Zealand March 2015 to July 2016.
    On my second 4200 cambio corsa brought over to NZ.
    Current fleet:
    Maserati 4200 cambio corsa MY 2004.
    Range Rover Vogue 2008 4.4 Comfy Daily.
    1977 Daimler Sovereign XJC 4.2 one of only 2 in New Zealand.
    1976 Mini Clubman 1275 on the road project.
    1994 Mini Cooper on the road for www.porkpie,co.nz
    2010 BMW G450X Enduro Bike for exercise
    1976 Kawasaki Z1000.
    1973 Raleigh Chopper 3 Speed in orange.

  7. #7
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    Quote Originally Posted by philw696 View Post
    Light travels faster than sound.
    Do you have access to compressed air ?
    Yes, I have a compressor.
    All exterior of engine is dry.
    Andrew

    Light travels faster than sound,That's why some people appear bright until you hear them speak.
    4200
    Microplas Mistral
    EB50
    Rochdale GT
    Raleigh Runabout, Metallic red

  8. #8
    Senior Member philw696's Avatar
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    For blowing down the recess holes with a rag over the top to push and moisture up into the cloth.
    Ex Technician for Wanganui Motors Ford and Mazda.
    Technician for Fredco Automasters Auckland.
    Technician for Auckland Maserati and Lotus in New Zealand March 2015 to July 2016.
    On my second 4200 cambio corsa brought over to NZ.
    Current fleet:
    Maserati 4200 cambio corsa MY 2004.
    Range Rover Vogue 2008 4.4 Comfy Daily.
    1977 Daimler Sovereign XJC 4.2 one of only 2 in New Zealand.
    1976 Mini Clubman 1275 on the road project.
    1994 Mini Cooper on the road for www.porkpie,co.nz
    2010 BMW G450X Enduro Bike for exercise
    1976 Kawasaki Z1000.
    1973 Raleigh Chopper 3 Speed in orange.

  9. #9
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    Quote Originally Posted by philw696 View Post
    For blowing down the recess holes with a rag over the top to push and moisture up into the cloth.
    Sorry Phil, not quite sure what you mean by recess holes.
    do you mean the hole for spark plug?
    Andrew

    Light travels faster than sound,That's why some people appear bright until you hear them speak.
    4200
    Microplas Mistral
    EB50
    Rochdale GT
    Raleigh Runabout, Metallic red

  10. #10
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    Quote Originally Posted by daglocks View Post
    Sorry Phil, not quite sure what you mean by recess holes.
    do you mean the hole for spark plug?
    yes he means the sparking plug recess, where the coil pack pushes on to the top of the spark plug
    current vehicles:

    2007 maserati gransport LE - nero/nero
    2005 maserati 4200 coupe cambiocorsa - blue/avorio

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