Pastrykiller Posted February 10, 2013 Report Share Posted February 10, 2013 I can't get this freaking thing to run right. Originally the right side would misfire and chug as if it was not firing. I have new carbs and it still chugs as if it not firing on the right side. I know it is because I can see it when I test the plug wire. The left cyclinder is good and the right just fucking hates me. 421 cub stock cast 20cc domes on vp110 @ 32:1 V4 reeds Pwk 35 55 pilot 160 main 1.5 out on air screw Here are the things I've done to solve this with no resolve. Shook flywheel and no rattles Set pickup coil to .019 Tested pickup coil and it ohms out as good Set gap from .030 to .020 on the plugs Checked stator and it ohms out as being good Primary side of coil reads .6 on the meter Secondary side of coil reads 5,800 I've swapped the plugs and no change I've swapped the plug wires and no change I've changed the cdi out and no change I've swapped the domes from side to side and no change I've swapped the carbs from side to side and no change I've swapped the slides from side to side and no change I've pulled the plug boots and wrapped the bare wires around the plugs and no change Compression was 172-176 Ummmm what the fuck is the problem? Quote Link to comment Share on other sites More sharing options...
dirtydownunder Posted February 10, 2013 Report Share Posted February 10, 2013 seeing as the only thing you havent swapped is the coil. give that a try. does it miss from idle ? Quote Link to comment Share on other sites More sharing options...
Pastrykiller Posted February 10, 2013 Author Report Share Posted February 10, 2013 Already swapped the coil as well. It sputters at idle and when the slides are raised. Quote Link to comment Share on other sites More sharing options...
dirtydownunder Posted February 10, 2013 Report Share Posted February 10, 2013 a reed ? how different do the plugs looks from each other ? Quote Link to comment Share on other sites More sharing options...
Pastrykiller Posted February 10, 2013 Author Report Share Posted February 10, 2013 Reeds are brand new. Left plug is wet right is not. I swap the carbs and still no change. I'm lost right now and I have gone thru this thing with no luck. I just don't get it. I know it has spark in both because when I pull the plug wite the right side, it will bog down. When I plug it back in, it will pick up a little. Quote Link to comment Share on other sites More sharing options...
Pastrykiller Posted February 10, 2013 Author Report Share Posted February 10, 2013 It's not in the carbs. In theory I should be able to move the left carb to te right side and that would cause the problem to move to the other cylinder. It doesn't do that. The left side always runs good regardless of what carb is on that intake side. Quote Link to comment Share on other sites More sharing options...
dirtydownunder Posted February 10, 2013 Report Share Posted February 10, 2013 what if you pull the cap off the plug (the missing one), so the spark can jump to the plug ? that increases the resistance and creates a bigger spark. ? does it run better at idle ? Quote Link to comment Share on other sites More sharing options...
dirtydownunder Posted February 10, 2013 Report Share Posted February 10, 2013 oh ok left plug is wet, but thats the one firing ? and the right one isnt working and is dry ?? pingle blockage? Quote Link to comment Share on other sites More sharing options...
Pastrykiller Posted February 10, 2013 Author Report Share Posted February 10, 2013 The right side is not as wet as the left and both are firing. I'm about to pull the reeds again Quote Link to comment Share on other sites More sharing options...
dirtydownunder Posted February 10, 2013 Report Share Posted February 10, 2013 if you pull reeds, swap them. Quote Link to comment Share on other sites More sharing options...
Pastrykiller Posted February 10, 2013 Author Report Share Posted February 10, 2013 I just swapped them from side to side. Both head pipes are heating up an it seems to be running now. Didn't do anything but swap them. I feels as if I'm fat on the pilot now. I turned the air screws in to .5 and it bogs down. Turned it to 2.5 out and the idle cleaned up a lot. Gonna bump it down 1 jet size and see what it does. I wonder if this is intermittent and will become more of an issue later. Quote Link to comment Share on other sites More sharing options...
Pastrykiller Posted February 10, 2013 Author Report Share Posted February 10, 2013 Dual pingle installed and they both piss fuel when I pull them off te carb. Quote Link to comment Share on other sites More sharing options...
dirtydownunder Posted February 10, 2013 Report Share Posted February 10, 2013 so all good now ? maybe some bad wiring some where ? Quote Link to comment Share on other sites More sharing options...
Pastrykiller Posted February 10, 2013 Author Report Share Posted February 10, 2013 Who the hell knows. I bumped the pilot down to a 50 and 1 turn out. Seems like something definitely happened. I will trouble shoot more tomorrow. Quote Link to comment Share on other sites More sharing options...
dirtydownunder Posted February 10, 2013 Report Share Posted February 10, 2013 good luck. Quote Link to comment Share on other sites More sharing options...
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