Question about 1989 Mazda MPV

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Rough idling,rough acceleration then runs decent when i back off

Why does my 1989 mazda mvp(with new plugs cables,cap and rotor)still have rough idle,and runs rough while accelerating,yet runs decent when i back off the gas?

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  • jhn_pettey Dec 28, 2008

    fuel injected

  • ricky horwood
    ricky horwood May 11, 2010

    hi there
    do you know if the car is fuel injected or carburetor


  • Anonymous Mar 29, 2014

    runs rough barely idles consuming lots of gas and oil

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  • 128 Answers

You may need to clean the injectors
what you can do is
you can buy some injector cleaner and see if this helps
make Shaw you get a decent brand as the cheep ones do not work as good
drive around with this in your gas tank
when you have in in your gas tank it helps clean them if you do some harsh acceleration but don't race the motor and don't speed
in other words get to the speed limit fast
this will apply pressure and will push through any gunk build up
there may be some smoke for a while from the exhaust but is will go back to normal when the fuel injector has finished cleaning and all the build up is gone
hopes this helps


Posted on Dec 29, 2008

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