miss fire


Fresh Recruit
hi all
i have miss fire when the rev reaches 5000 and its keep missfiring for a while then disappear then keep missfiring even at low rpm . at idel there is no missfiring and i noticed that the rpm fluctuate from 3000 up to 8000 . and there is no check engine light .
try a diagnostic for any codes
check distributor, plugs, plug wires, ignitor, map sensor---all associated wiring and connections
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