FUEL INJECTION SYSTEM TROUBLESHOOTING
SERVICE MANUAL NUMBER 23
Surges and/or Chuggles Symptom (Continued)
1.
Check integrity of the primary and
secondary wiring.
2.
3.
Check routing of the wiring.
Check condition of IC module,
pick-up coil, distributor cap, rotor
and spark plug wires.
9
4.
If a problem is found, repair as
necessary.
Go to OBD
System
Check
Was a problem found?
-
Go to Step 10
1.
Remove spark plugs and check for
wet plugs. cracks, wear, improper
gap, burned electrodes or heavy
deposits.
•
Refer to Distributor Ignition System
in “Description and System Opera-
tion” section.
10
NOTE: If park plugs are gas or oil fouled,
the cause of the fouling must be deter-
mined before replacing the spark plugs.
2.
If a problem is found, repair as
necessary.
Go to OBD
System
Check
Was a problem found?
-
-
Go to Step 11
Go to Step 12
1.
Check fuel delivery system items
thatcancausetheenginetorunrich.
11
12
2. If a problem is found, repair as
necessary.
Was a problem found?
Go to OBD
System
Check
1.
Check fuel delivery system items
that can cause the engine to run
lean.
If a problem is found, repair as
necessary.
2.
Go to OBD
System
Check
Was a problem found?
-
-
-
Go to Step 13
Go to Step 14
Go to Step 15
1.
Check the injector connections for
proper mating.
If any of the injectors connectors are
connected to an incorrect cylinder,
correct as necessary.
2.
13
14
Go to OBD
System
Check
Was a problem found?
1.
Check ECM grounds for being
clean, tight and in the proper
locations.
If a problem is found, repair as
necessary.
2.
Go to OBD
System
Check
Was a problem found?
Index
Page 5D-12
90-861326--1 MARCH 1999
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1998, 1999, 2000, 2001 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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Marine readers have rated Mercury MerCruiser GM V8 GM V8 454 CID 7.4L and 502 cid 8.2L Marine Engines Service Manual Number 23 5.0 out of 5.0 based on 1 product reviews. Just need the manual. Wrote review. Can't technically review what I haven't seen yet...