Not as familiar with the 2.4s as I am with the 2.5s but if it has a similar ignition system then I would check the wires going to the trigger. The trigger moves every time you move the throttle and sometimes the wires break from all of the back and forth motion. Not sure if it acts up long enough to get a good idea of which cylinders are firing and which aren’t but I know on the 2.5s if 1 cylinder isn’t firing it’s normally an issue with the coil pack. A switch box will usually effect 1 bank of cylinders. The stator will cause issues on all cylinders and a trigger issue will effect two cylinders on opposite banks. Maybe when it does it pull and read the plugs or shoot the cylinders with a heat gun and see if there are any that are drastically cooler than the rest. It will rev and run a lot better when in neutral because there is no load with out load you can run on 3-4 cylinders and still sound like it’s running ok sometimes. Not sure if this helps since it mainly pertains to the 2.5l stuff I’m used to but with a shot.
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1983 wellcraft v20 steplift Mercury 250efi on the bracket!!!!
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05-18-2018, 05:07 AM
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