1979 Johnson Javelin 100 V-4<br />OK here's the deal. I have 90lb compression in all 4 cylinders. I have spark through the spark plugs. While idleing I pull the plug wires 1 at a time, when I pull each of the wires (one at a time) each top one will almost kill the motor, the bottom 2 make no change like they're not firing but are wet with fuel. I can pull the plug and hold to a ground crank the motor and the plugs are sparking good (they're new). It will turn about 5000rpm on the lake but won't hardly idle because it seems to only be running on 2 cylinders. Any ideas?? <br /><br />Thanx in advance <br /><br />Brian <br /><br /><br />--------------------------------------------------------------------------------
)<br /><br />Just remember to hose out all passages with carb cleaner and follow up with air. You can remove the jets by modifing a screw driver to fit. When you flip the carb body upside down, you will see two core plugs. Remove these so you can get to the cavity to make sure there is nothing laying in there. New core plugs should be in the kit. <br /><br />Soaking out the carbs in carb cleaner would be a good thing to do before using the air.<br /><br />Set the floats level with the gasket surface, just a tad high in front. This is with the needle and set in place with the float attached.<br /><br />Take a look in the holes and make sure the reeds are OK also.<br /><br />Not a hard job.....just a little time consuming to do right.....Keep us posted and Good Luck!