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MerCruiser 350 Magnum MPI User Manual

MerCruiser 350 Magnum MPI
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57
Possible Cause RemedyTrouble
Excessive engine
temperature
(continued)
Heat exchanger cores plugged
with foreign material
Loss of pressure in fresh water
section
Faulty thermostat
Insufficient oil in crank-
case
Clean.
Check for leaks. Clean, test and inspect pres-
sure cap.
Replace.
Check and add correct grade and viscosity oil.
Check entire engine for leaks.
Low engine oil
pressure
Excessive oil in crankcase
(causing it to become aerated)
Diluted or improper viscosity oil
Engine oil cooler hose kinked
(causing excessive oil temper-
ature and thinning of the oil)
Low fluid level
Transmission shift lever not posi-
tioned properly (causing clutches
to slip and overheat fluid)
Fluid cooler hoses kinked
Excessive current draw from bat-
tery
Check and remove required amount of oil.
Check for cause of excessive oil (improper
filling, bad fuel pump, etc.).
Change oil and oil filter, being sure to use
correct grade and viscosity oil. Determine
cause for dilution (excessive idling, faulty
fuel pump, etc.).
Straighten hose or replace if damaged.
Maintain fluid level.
Inspect shift linkages and shift lever
positioning
Straighten hoses or replace, if damaged.
Turn off non-essential accessories.
Excessive trans-
mission fluid
temperature or
slipping trans-
mission
Loose or dirty electrical connec-
tions or damaged wiring
Check all associated electrical connections
and wires (especially battery cables). Clean
and tighten faulty connections. Repair or re-
place damaged wiring.
Alternator drive belt loose or in
poor condition
Unacceptable battery condition
Insufficient lubrication on shift and
throttle linkages
Loose or missing shift and
throttle linkage fasteners
Obstruction in shift or throttle
linkages
Replace and/or adjust.
Test battery.
Lubricate.
Check all linkages. If any are loose or missing,
SEE YOUR DEALER IMMEDIATELY.
Remove obstruction.
Shift or throttle cable kinked Straighten cable or have your dealer replace
cable if damaged beyond repair.
Remote control
operates hard,
binds, has exces-
sive free-play or
makes unusual
sounds
Insufficient engine
temperature
Battery will not
come up on
charge
Coolant level low in fresh water
section
Check for cause of low coolant level and repair.
Fill system with proper coolant solution.

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MerCruiser 350 Magnum MPI Specifications

General IconGeneral
BrandMerCruiser
Model350 Magnum MPI
CategoryEngine
LanguageEnglish

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