PleasureCraft Engine Group 5.0L User Manual

7 - 8 Symptoms 5.0/5.7/6.0/8.1L
MEFI 4 - PCM
Lack of Power, Sluggish or Spongy Symptom
Step Action Value Yes No
Defi nition: Engine delivers less than expected power. Little or no increase in speed when accelerator pedal is
pushed down part way.
1
Was the “On-Board Diagnostic (OBD) System Check” Go to OBD
performed? — Go to Step 2 System Check
Compare engine performance with a similar engine. Both
2 engine’s performance should be close.
No
Is engine performance close to a similar engine. — problem found Go to Step 3
3
Was visual/physical check performed? Go to Visual/
— Go to Step 4 Physical check
1. Check for correct cam retard.
4
• Refer to Distributor Ignition section.
2. If a problem is found, repair as necessary. Go to OBD
Was a problem found? — System Check Go to Step 5
1. Remove and check fl ame arrestor for dirt, or for being
5
restricted.
2. Replace fl ame arrestor if necessary.
Go to OBD
Was a problem found? — System Check Go to Step 6
1. Check for contaminated fuel.
6
2. Check fuel fi lters.
3. If a problem is found, repair as necessary.
Go to OBD
Was a problem found? — System Check Go to Step 7
1. Check for proper fuel pressure while the condition exists.
7
• Refer to Table A-4.
2. If a problem is found, repair as necessary.
Go to OBD
Was a problem found? — System Check Go to Step 8
1. Check for injector driver CKT’s 467 or 468 for an open.
8 2. If a problem is found, repair as necessary.
Go to OBD
Was a problem found? — System Check Go to Step 9
1. Check for proper operation of Ignition Control (IC)
9
circuit and the Knock Sensor (KS) circuit(s).
2. If a problem is found, repair as necessary.
Go to OBD
Was a problem found? — System Check Go to Step 10
1. Check for proper ignition voltage output.
10
• Refer to Table A-7.
2. If a problem is found, repair as necessary.
Go to OBD
Was a problem found? — System Check Go to Step 11
1. Remove spark plugs, check for wet plugs, cracks, wear,
improper gap, burned electrodes or heavy deposits.
11
Notice: If spark plugs are gas or oil fouled, the cause of the
fouling must be determined before replacing the spark plugs.
2. If a problem is found, repair as necessary.
Go to OBD
Was a problem found? — System Check Go to Step 12

PleasureCraft Engine Group 5.0L Specifications

General

Brand	PleasureCraft Engine Group
Model	5.0L
Category	Engine
Language	English