miss fire

[yilak]

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 .

 

[gorganl2000]

try a diagnostic for any codes
check distributor, plugs, plug wires, ignitor, map sensor---all associated wiring and connections