SERVICE MANUAL NUMBER 23
TROUBLESHOOTING
Poor Fuel Economy
Cause
Special Information
Fuel leaks
Prolonged idling; slow acceleration; failure
to cut back on throttle once boat is on
plane; boat overloaded; uneven weight
distribution
Operator habits
Bent, damaged, or wrong propeller. Water
test boat for proper operating rpm at wide-
open-throttle
Engine laboring
Clogged flame arrestor
Engine compartment sealed too tight
Boat bottom
Not enough air for engine to run properly
Dirty (marine growth), hook, rocker
Improper fuel
Crankcase ventilation system not working
Engine running too cold or too hot
Plugged or restricted exhaust
Engine
Low compression
Engine Runs Poorly at Idle
Symptoms
Cause
Engine surges
Low top speed or lack of power
Poor cold engine operation
Engine stalls
Refer to “Fuel Injection Troubleshooting,”
SECTION 5D
Hard starting
Refer to “Engine Starts Hard”
90-861326--1 MARCH 1999
Page 1C-13
| 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...