Question about 1993 Mitsubishi Mirage

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Car is Surging and wont accelerate, sometimes gets slower until i lift my foot off the gas

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  • Clinton Bridge Apr 26, 2013

    Dont know where my description went to so Ill add more info here. What octane gas should this car run, would running the wrong gas explain my problem Any info on common faults for this model car Can the coil, which is built in to the distributor, fail under load So far Ive swapped out, Replaced many components that I've found to be defected and the car still surges and bogs down under load, more so when hot, Its almost drivable when the choke is on or the feedback solenoid is disconnected, forcing it to run rich. The parts Ive swapped as follows Cracked distributor cap and rotor, freed up the centrifugal weights, EGR was leaking exhaust slightly, idle up dashpot not holding vacuum, and its associated solenoid was ceased and not passing vac. The air cleaner was clogged, carby had grit dirt in it, cleaned it out and put it back on, which improved the running of the car, but still bogged down when accelerating, or trying to with the odd backfiring, tried another carby which changed the characteristics of the fault but didnt fix it, anyone got any ideas. The timing is at 3deg with the vacuum hose plugged, with the timing light I can see the centrifugal advance working, and after I put the vacuum hose on I see it jump up as well.

  • Clinton Bridge Apr 26, 2013

    Hi skychief2001, I found the diagnosis plug, even tho the car does have an ECU, it appears not to have the pin needed, Being feedback carburetor, It may be a different pin out, im not sure

  • Clinton Bridge Apr 29, 2013

    The main problem ended up being in either the inbuilt coil or transistor switch, as swapping the distributor has solved thw bogging down problem, Both the mechanical and vacuum advance is the same for both distributors. Along with the idle up dashpot, solenoid, TPS and dirt in the carby. This car was a lot of small problems leading to one big problem, hope this helps someone who might have a similar problem, Thanks

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