00 1.25 Running rough: no spark at No. 4 coil pack - tophat46
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?
00 1.25 Running rough: no spark at No. 4 coil pack - elekie&a/c doctor
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
00 1.25 Running rough: no spark at No. 4 coil pack - tophat46
elekie&a/c doctor, Thanx for reply. Replaced spark plugs four weeks ago, problem only started yesterday, so sounds like a new coil pack
00 1.25 Running rough: no spark at No. 4 coil pack - tophat46
Replaced coil pack, running fine now...