Mercury MerCruiser GM V8 GM V8 454 CID 7.4L and 502 cid 8.2L Marine Engines Service Manual Number 23

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
Product Specification
CategoriesMercury MerCruiser Manuals
Tags,
Model Year1998, 1999, 2000, 2001
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Mercury MerCruiser GM V8 GM V8 454 CID 7.4L and 502 cid 8.2L Marine Engines Service Manual Number 23 SKU UPC Model
Matt on Apr 08, 2015.

Just need the manual. Wrote review. Can't technically review what I haven't seen yet...


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