run ends with no spark

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maddmike

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Hey guys question for you. Everytime I take my mt out it dies after a good tank or 2. I have a killer bee but that's not causing any issues. I have no spark when i pull plug out so I go home and regap coil and it usually works again. I use red loktight on the coil screws and let sit overnight before I run her again so i don't see it being an issue. I have pullstart outwears but do not have crankcase protector. I have been running in dusty conditions and don't know if its getting sucked up under my coil magnet or if its something different. It's really bugging me that everytime I take it out it ends the same way with no spark. Hope to someday get it sorted out so I can get more fuel through her in a single run.
 
There is only two things that make spark,coil and plug. Change the plug.try a different coil. Make shure the coil gap is correct,use a business card to set the gap.Hope this helps.
 
you may also want to check your cooling system is not obstructed (dirt or grass), is the motor overheating , when my MT was new it would shut down after 1/2 tank ,I figure it must have been the coil overheating and shutting down . my xsc did the same thing when new.I know how to tune a engine and it did not appear to be getting too hot but the coil would shut down . it did this for 2-3 tanks on both cars and then it just started running fine .both cars were the same ?It may also be possible you are a bit too lean .try to richen it up a bit, this will make the engine run a bit cooler and hopefully keep the coil from shutting down .Roger
 
I would start with a new plug. I have had a plug fail right after brake in. Some times they just are bad. If it continues to happen with a new plug you know you can cross it off the list.
 
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