If there isn't any spark to the spark plugs after changing them where would you start next?

Answer 1

older cars would be the distributer and coil. Newer cars have coil for each spark plugs the spark plug wire plug directly into coil then check starter and battery coil should get spark when starting car older cars would be the distributer and coil. Newer cars have coil for each spark plugs the spark plug wire plug directly into coil then check starter and battery coil should get spark when starting car. New comment. Most now if not all modern cars with spark ignition engines have an ignition system which is computer controlled. When you suspect a fault with the ignition system the first thing to do is plug a code reader into the diagnostic socket. If you have not got one, contact a garage for advice. The codes normally start with PO3XXX, there are a vast array of codes, so it is not worth writing them here otherwise a book would be written? Modern vehicle electronics don't like voltmeters either, the signals generated cannot always be investigated by these old methods? Most diagnostics are now carried out using a Lab Scope, this is essencially a visual voltmeter, but can pick up signals which a voltmeter would miss. With a modern ignition system the DIY are limited to checking and changing ignition components, if this does not solve the problem, then professional advice will need to be sought. Check in this order, plug wire - distributor - coil - power coming to the coil .