Intermittent ignition miss

IA Roy · Aug 12, 2016

I have an old 16 hp single cylinder cast iron Briggs and Stratton. It has an intermittent ignition miss after replacing points, condenser and spark plug. After 10 to 15 minutes it can stop. I converted this unit to battery ignition with a mid 90's ford ignition coil and a ballast resistor about 15 years ago and it worked fine. Is there a way to determine what is causing the miss? I am thinking it is probably a bad new condenser or the coil? I confirmed the miss with an inductive timing light. I have another similar coil, or I can get another condenser, either used or new. Will post in garden tractors also.

Jaden · Aug 12, 2016

I had a tractor that would intermittently miss or stop. Ignition switch was bad.

Corner Post · Aug 12, 2016

Compare the new points spring tension to the old ones. Had a weak spring on a new set that took awhile to solve. My thinking was, can't be wrong, they are new.

MNGB · Aug 12, 2016

See post in garden tractor forum, likewise I had a set of points with low spring tension, you can bend the tab to add tension.
GB in MN

IA Roy · Aug 13, 2016

Actually this intermittent miss is more like a "hit and miss". I changed the coil and condenser last night and it did not improve. Hard to even get it up to full speed. New points, condenser and plug.

MNGB · Aug 13, 2016

Check the points don't make any difference if they are new if there not making constant contact they will not work.
GB in MN

Intermittent ignition miss

IA Roy

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Jaden

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Corner Post

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MNGB

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IA Roy

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MNGB

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