PIAGGIO PORTER 1.3 16V 2008, Service Manual

Page: 510 / 892

gine was hot or not, if the air/fuel ratio
was lean or rich etc.
•
The diagnosis diagram is based on the
assumption that the engine is started
under normal conditions. If the engine
does not start, go to the Matrix table for
troubleshooting according to the mal-
function phenomenon.
•
When code P1300 is generated (ionic
system malfunction), the code P0300
(detecting random/multiple cylinder ir-
regular ignition) as well as codes
P0301-P0304 (detecting irregular igni-
tion of cylinders 1 to 4) can be gener-
ated at the same time.
1. Spark check
•
Remove the fuel pump relay from the
relay block.
•
Remove the ignition coils and the spark
plugs (all cylinders 1, 2, 3 and 4).
•
Fit the spark plug on the ignition coil,
connect the ignition coil connector to
the ignition coil.
•
Earth the spark plug.
•
Start the engine and check the spark
plug sparks.
SPARKS WILL BE CHECKED. PAY ATTENTION TO SUR-
ROUNDING INFLAMMABLE OBJECTS.
CAUTION
NEVER USE SPARK PLUGS DIFFERENT FROM THOSE
RECOMMENDED.
2. If sparks have been checked in all cylinders proceed with step 5.
•
If sparks are not checked in some cylinders, inspect the spark plug of cylinders where there
is no spark.
•
Replace the spark plug, if necessary, repeat the spark check.
•
If no spark plug detected, go to step 3, otherwise go to step 5.
3. Checking the ignition coil power supply voltage
•
With the ignition switch set to OFF, disconnect the ignition coil connector of each cylinder.
Iniection System
PORTER 1.3 16V
IS - 510