There are three common sources of no spark on all cylinders:
- failure of the coil,
- failure of the ignition control module ("ignitor"), or
- the button contact in the distributor cap is sticking.
The ignitor is an expensive part to replace (list is over $400), and
some less-common failures are difficult to diagnose. The common
failures are easily diagnosable since there is a tachometer output and
engine computer gets a feedback signal indicating that the ignitor
thinks it has triggered a spark. Indications that it's still good are if
- the tach jumps when cranking the engine, and
- if there are no engine computer error codes.
The ignitor is mounted on the left strut tower where it's easily seen,
but you'll need to unclip the air filter cover to remove it.
The coil is less expensive, but it's inside the distributor and thus
more difficult to replace. You'll need to remove the air filter cover
then the distributor cap to test the coil. The primary should measure
less than 1 ohm between the screw terminals, and the secondary should
measure between 9K and 15K ohms between either screw terminal and where
the distributor cap button makes contact. A resistance lower than 9K
ohms indicates the coil has at least partially failed and should be
replaced.
Tools to replace coil and distributor parts
#2 phillips screwdriver for coil mounting screws
7mm (1/4") nut driver for coil terminals
8mm driver (or #2 phillips) for distributor cap screws
10mm socket (or #3 phillips) for air duct clamp
12mm socket and 3"+ extension for distributor hold-down bolts
12mm open-end wrench for throttle cable
Small screwdriver or plastic tool to
Remove distributor o-ring
Release plug wires from distributor cap
None of these parts, with the possible exception of the distributor cap,
will come with a new or rebuilt distributor.