Ignition System Check (2 of 2)
TEST LIGHT
TO DC
a
POWER
SUPPLY
(1.5 to 8 V)
b
CHART CONTINUED
FROM PAGE 75
LIGHT
BLINKS
LIGHT ON
STEADY
Fig. 1
5
• DISCONNECT DISTRIBUTOR 4 TERMINAL CONNECTOR.
REPLACE IGNITION COIL AND
RECHECK
FOR SPARK WITH TIMING
LIGHT. IF STILL
NO SPARK, REINSTALL ORIGI-
NAL COIL
•
•
•
•
•
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 CONNECTED FROM A
VOLTAGE SOURCE (1.5 TO 8 V) TO MODULE TERMINAL “P” (CHART
AND REPLACE DISTRIBUTOR
MODULE.
1
OF 2 PAGE 78).
NO DROP IN VOLTAGE
VOLTAGE DROPS
6
• CHECK FOR SPARK FROM COIL WIRE
WITH TIMING LIGHT AS TEST LIGHT IS
REMOVED FROM MODULE TERMINAL
CHECK MODULE GROUND.
IF OK, REPLACE MODULE.
SPARK
NO SPARK
•
IS ROTATING POLE
PIECE STILL MAGNE-
TIZED?
•
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, RE-
PLACE DISTRIBUTOR MODULE.
SYSTEM OK
CHECK PICK-UP COIL OR
CONNECTIONS (COIL
RESISTANCE SHOULD BE
REPLACE POLE
PIECE AND
SHAFT ASSEMBLY.
500-1500
OHMS AND
NOT GROUNDED.)
Index
90-823224--2 796
ELECTRONIC FUEL INJECTION (MULTI-PORT AND THROTTLE BODY) - 5C-77
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1993, 1994, 1995, 1996, 1997 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(4 votes, average: 4.5 out of 5)
Marine readers have rated 1993 1997 Mercury-MerCruiser GM V8 454 CID 7.4L and 502 CID 8.2L Marine Engines Service Manual Number 16 4.5 out of 5.0 based on 4 product reviews. Hugely helpful service manual! Perfect. Thank you!
Manuals are all Important for Technician
This book is invaluable if you do your own repairs. Great book.
Could not find a copy until a search brought me here.
Excellent print.
Thank you