If it pop starts every time it does not start with the key, then the problem is the ignition switch.
Take note of the Instrument Cluster Warning lights when cranking. The oil & battery lights should remain ON while cranking and
go out once the engine starts. If those lights go OUT while cranking, then the Ignition Circuit is losing power because of a faulty switch.
Otherwise. Ignition Components (over time) in the engine bay get sensitive to moisture that "shorts-out" the ignition spark. Replace
Spark Plug Wires, Car & Rotor & Ignition Coil if older than 5 to 8 years, as preventative maintenance.
Thomas
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Tuesday, December 20th, 2016 AT 12:10 PM