Engine Runs Poorly at Idle
Symptoms
Cause
A. Main metering jets
B. Leaking gaskets
C. Float adjustment
D. Saturated float
Engine surges
E. Power piston or valve
F. Throttle valves
A. Power piston or valve
B. Float adjustment
C. Main metering jets
D. Leaking gaskets
A. Idle RPM too low
B. Idle mixture screws
C. Throttle valves
Low top speed or lack of power
Poor cold engine operation
D. Automatic choke
E. Engine flooding
A. Idle RPM too low
B. Idle mixture screws
C. Engine flooding
Engine stalls
Hard starting
D. Automatic choke
E. Dirt in carburetor
F. Accelerator pump
G. Leaking gaskets
Refer to “Engine Starts Hard”
Index
90-823224--2 796
TROUBLESHOOTING - 1C-15
| 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 |
(4 votes, average: 4.5 out of 5)
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!
Manuals are all Important for Technician
This book is invaluable if you do your own repairs. Great book.
Could not find a copy until a search brought me here.
Excellent print.
Thank you