POOR FUEL ECONOMY
Definition: Fuel economy is noticeably lower than expected.
PRELIMINARY CHECKS
Perform the important preliminary checks as described at the start of “Troubleshooting” section.
1.
Operator’s driving habits.
Dirty or plugged flame arrestor.
Fuel leaks.
2.
3.
CHECK FUEL SYSTEM FOR:
1.
2.
3.
Quality and type of fuel.
Flooded VST.
Fuel pressure within specification.
CHECK IGNITION SYSTEM FOR:
1.
2.
3.
Correct base timing
Properly functioning (advancing and retarding of timing) Ignition Control (IC).
Fuel fouled, cracked, worn, improperly gapped spark plugs, burned electrodes, or heavy depos-
its. Repair or replace as necessary.
4.
Knock sensor system operation.
Index
5C-134 - ELECTRONIC FUEL INJECTION (MULTI-PORT AND THROTTLE BODY)
90-823224--2 796
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1993, 1994, 1995, 1996, 1997 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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Marine readers have rated 1993 1997 Mercury-MerCruiser GM V8 454 CID 7.4L and 502 CID 8.2L Marine Engines Service Manual Number 16 4.5 out of 5.0 based on 4 product reviews. Hugely helpful service manual! Perfect. Thank you!
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