Service manual

90-898303 2-40
IMPORTANT: The presence of a good spark will not
necessarily indicate condition of timing. Ignition timing may
be off far enough to prevent the engine from starting, but still
allow a good spark to be present in the spark gap tester.
Ignition system failure (switch box, stator, trigger, etc.) can cause
fuel delivery problems. Injectors are triggered in pairs by one,
three, five primary circuits (inner switch box).
No. 1 Primary Triggers No. 3 & 4 Injectors
No. 3 Primary Triggers No. 5 & 6 Injectors
No. 5 Primary Triggers No. 1 & 2 Injectors
Failure in one or more of these primary circuits will cause no spark
and no fuel to respective cylinders (above). Check spark and spark
plugs on all cylinders before attempting EFI tests.
Electronic Fuel Injection Set Up
IMPORTANT: Follow EFI Timing/Synchronizing/Adjustment
before attempting tests on EFI system.
EFI set up procedures must be followed before tests on system are
performed . Improper set up can result in poor engine performance
(i.e. uncontrollable idle speeds, lean sneezing, low power during
acceleration or engine will simply not run.) Failure to properly set
up the EFI system can lead to misdirection in solving simple
problems in the EFI system.
Notes
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