Mercury 454 Magnum MPI Tournament Ski, Руководство по установке

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Whipple Charger Installations Instructions for Mercury 454/502 Magnum Engines
screw on regulator (clockwise for more pressure, counter clockwise for less) until
you reach 40 lbs. of fuel pressure. Tighten nut on regulator so allen does not
vibrate out.
‰
Install 5/32” vacuum/boost line onto regulator barbed fitting. Secure lines with zip
ties. With motor running in vacuum, pressure should drop once line is connected
and will rise above 40 under boost. Under full boost, the fuel pressure must hold a
steady 45lbs. of pressure (+/- 2lbs). If not, there is a restriction in the line.
IDLE SPEED SETTING
31.
Some motors may need an idle adjustment. First, you must understand the ECU has a
desired idle speed that the motor is always going to try to achieve. The rpm idle speed
should be 750 rpm once motor is up in the 80+ range of engine coolant temperature.
‰
On the starboard side of throttle body, there’s the linkage arm that is pushed over a
splined shaft. Remove the linkage arm from the throttle body so you can have
better access to the throttle stops.
‰
You must adjust the setscrew to raise or lower the idle speed. Note that this is
where the throttle stops in the relaxed or returned position.
Engines that idle to high:
‰
This means either there’s a vacuum leak, too much timing or there is too much air
going by the throttle blades. To lower airflow at idle, take the set screw/throttle
stop and lower it. This allows the throttle blade to close more when returned. Make
small adjustments such as 1/8
th
turns. NOTE: Don’t forget to tighten locking
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