SERVICE MANUAL NUMBER 26
TROUBLESHOOTING
Ignition System Check (2 of 2)
TEST LIGHT
TO DC
a
POWER
SUPPLY
(1.5 to 8 V)
b
CHART CONTINUED
FROM PREVIOUS
PAGE
LIGHT
BLINKS
LIGHT ON
STEADY
Fig. 1
•
•
•
•
•
•
DISCONNECT DISTRIBUTOR 4 TERMINAL CONNECTOR.
REMOVE DISTRIBUTOR CAP.
DISCONNECT PICK-UP COIL CONNECTOR FROM MODULE.
CONNECT VOLTMETER FROM TACH. TERMINAL TO GROUND.
IGNITION “ON.”
INSULATE A TEST LIGHT PROBE TO 1/4, FROM TIP AND
NOTE VOLTAGE, AS TEST LIGHT IS MOMENTARILY CON-
NECTED FROM A VOLTAGE SOURCE (1.5 TO 8 V) TO MODULE
TERMINAL “P” (CHART 1 OF 2 PAGE 11).
5
REPLACE IGNITION COIL AND
RECHECK FOR SPARK WITH
TIMING LIGHT. IF STILL NO
SPARK, REINSTALL ORIGINAL
COIL AND REPLACE
DISTRIBUTOR MODULE.
NO DROP IN VOLTAGE
VOLTAGE DROPS
•
CHECK FOR SPARK FROM COIL WIRE
WITH TIMING LIGHT AS TEST LIGHT IS
REMOVED FROM MODULE TERMINAL
CHECK MODULE GROUND.
IF OK, REPLACE MODULE.
6
SPARK
NO SPARK
•
IS ROTATING POLE
PIECE STILL MAGNETIZED?
•
REPLACE IGNITION COIL
AND REPEAT STEP 5.
NO SPARK
SPARK
YES
NO
IGNITION COIL REMOVED IS OK,
REINSTALL COIL AND CHECK
COIL WIRE FROM DIST. CAP. IF
OK, REPLACE DISTRIBUTOR
MODULE.
SYSTEM OK
CHECK PICK-UP COIL OR
CONNECTIONS (COIL
RESISTANCE SHOULD BE
500-1500 OHMS AND
NOT GROUNDED.)
REPLACE POLE
PIECE AND
SHAFT ASSEMBLY.
Index
90-861329--1
MARCH 1999
Page 1C-13
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 181 CID |
| Model Year | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(6 votes, average: 5 out of 5)
Marine readers have rated Mercury MerCruiser GM 4 Cylinder 181 cid 3.0L Marine Engines Service Manual Number 26 5.0 out of 5.0 based on 6 product reviews. Thanks for sharing this material. Helps a lot after suffering with bad mechanics. spend too much money and nothing very good
great manual, makes impossible jobs possible. without a manual you can not do the job, a must have.
Great resource. Excellent information provided.
Need help to install automate choke
Need help to instal automate choke