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4g63 running issues. runs rough and revs up and down for 30seconds then runs backward
i did and direct engine swap in my 1991 mitsubishi mighty max. engine is a 4g63 2.4l. did a new timing belt and water pump before i set motor in. When i start the engine it runs very rough and only runs for about 30 seconds. The engine will run at low rpm then surge to a higher rev over and over again for thirty seconds. then on downside of the last surge of rpms the engine will spin backwards and die. i have triied playing with the distributor and that hasnt changed anything. looks like i have everything connected correctly. i am stumped. driving me nuts. anyone have any ideas?
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