FUEL INJECTION SYSTEM TROUBLESHOOTING
SERVICE MANUAL NUMBER 24
Surges and/or Chuggles Symptom (Continued)
Step
Action
Yes
No
PROCEED TO
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 Operation” sec-
tion.
9
NOTE: If spark plugs are gas or oil fouled, the
cause of the fouling must be determined before
replacing the spark plugs.
Were spark plugs damaged?
Step 10
Step 11
Step 12
1.
Check fuel delivery system items that can
cause the engine to run rich.
10
11
Was a problem found?
1.
Check fuel delivery system items that can
cause the engine to run lean.
Was a problem found?
1.
Check the injector connections for proper
mating.
2.
If any of the injectors connectors are con-
nected to an incorrect cylinder, correct as
necessary.
12
13
OBD
Were any injectors improperly connected?
Step 13
Step 14
1.
Check ECM grounds for being clean, tight
and in the proper locations.
Were
ECM
grounds
dirty,
loose
or
improperly connected?
1.
Visually/physically check vacuum hoses
for splits, kinks and proper connections and
routing.
14
15
Was a problem found?
Check or proper alternator voltage output.
Is voltage between 11 - 16 volts?
Step 15
Step 16
1.
1.
Review all diagnostic procedures within
this table.
2.
If all procedures have been completed and
no malfunctions have been found, review/
inspect the following:
16
•
•
•
Visual/physical inspection.
Scan tool data.
All electrical connections within a sus-
pected circuit and/or system.
Contact
MerCruiser
Customer
Service
Was a problem found?
Index
Page 5F-8
90-861327--1 OCTOBER 1999
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 305 CID, Mercury MerCruiser 350 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 Engines Service Manual Number 24 GM V-8 305 CID 350 CID 4.0 out of 4.0 based on 1 product reviews. Great performance engine.
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