No spark at No. 4 lead from coil pack, when I lift off the plug lead at the coil pack end.
Swapped plug lead 4 with 1, runs even more rough, (i dont have a spare lead to go to No. 1.)
Put spare plug into No. 4 lead and held spare plug onto block, no spark (This sparked OK on No. 1 plug lead end).
Multi-metered (not a megger!) all plug leads, seem to be OK.
Is it the coil pack, or something else, as would just one of the coil pack outputs fail like this?
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No spark on one cylinder is usually a fault of the coil pack.Also when replacing the coil,make sure the spark plugs are not excessively worn.hth
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elekie&a/c doctor, Thanx for reply. Replaced spark plugs four weeks ago, problem only started yesterday, so sounds like a new coil pack
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Replaced coil pack, running fine now...
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