first with engine off, pull lead from any spark plug and remove spark plug, or insert a spare good one into lead end, hold top of lead and rest bottom of spark plug on engine, get someone to turn over engine for you, while you observe if you have a strong blue spark at plug,repeat for three other leads, if no spark on any, could be faulty coil pack, this is the place where all the leads go to, also if leads are not flexible and feel stiff they will need replacing, one final point if replacing leads do one at a time get them in wrong position and firing order will be wrong good luck r dalton.
r dalton, January 2009
