ignition coil

[FJ510]

can anyone tell me the methods for checking the quality/operation of a coil   i have 4 coils on my FJ20DET and i have spark at the plug end of the lead i have fuel at the injectors, i have 160 compression   yet my car is running on 3 cylinders.  i unplug an injector it idles up i pull of a plug lead i have no change at all.   i have tried a new lead, a new plug, a new injector...   how can i check to see if the coil is giving a strong enough spark?     --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/membersozdat@datascribe.com.au/ ---------------------------------------------------------------------