4.0L Disco II auto misfire

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T

Tim

Guest
My 99my Disco has what seems to be a misfire it drives fine untill it
reaches 4th gear,it then develops a major misfire,when put on the computer
it idles fine but on a run it has a severe misfire in 4th the computer shows
its missing on all cylinders with no pattern.I have replaced the coil packs
and HT leads(magnecor) i also replaced the plugs with the relevant champion
ones.This seems to have improved it!
The car also has a gas conversion(prins vsi) when running on gas the
symptoms are not as bad, any thoughts or advice would be very helpfull.
mny thx
Tim.



 
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