an older MerCruiser carbureted stern drive and suspect there is a problem
with the mechanical fuel pump. A pressure test revealed nothing. I also
checked the antisiphon device and found it to be working properly. What
else should I be looking at? P.B., via e-mail
Mechanical fuel pumps on these engines require no maintenance and cannot
be serviced and therefore must be replaced if defective. The two most
common problems with this kind of fuel pump are incorrect pressure and
low volume. As you’ve checked the pressure, you should perform a
flow test. But before you do, check the fuel lines for kinks and your
primary and secondary fuel filters for clogs. Once you've ascertained
that these parts of the system are okay, disconnect the fuel inlet line
from the carburetor as indicated in the top left illustration. Place the
end into a half-gallon container (see illustration at top right). Start
your engine and let it run for 30 seconds—it should be able to run
this long with the amount of gasoline left in the carburetor fuel bowl.
Shut down the engine and check the amount of gasoline that has accumulated
in the container. If the fuel pump is working properly, the container
should be half full. If it’s not, or just to be sure, disconnect
the inlet line at the pump and gasoline tank and blow compressed air through
the line. Reconnect the inlet line and repeat the flow test. If the volume
of gasoline collected in the container is still low, replace the pump.
What is the proper way to care for a Sunbrella
bimini and camper-top enclosure? M.L. via e-mail
If the fabric is very soiled, first brush off any loose dirt. Then hose
it down with fresh water and gently scrub the soiled areas with mild soap,
such as liquid Ivory, mixed with water. (Do not use harsh powder detergents.)
Allow the soap to soak in for a few minutes, then rinse the fabric and
allow it to air dry. For stubborn stains mix four ounces of chlorine bleach
with two ounces of Ivory liquid in one gallon of cool to lukewarm water.
Clean the area with a soft bristle brush and allow the mixture to soak
in for at least 20 minutes. Rinse thoroughly and air dry. Repeat this
process if necessary. If your fabric can fit in a washing machine, set
the wash and rinse cycles for cold water and use Ivory liquid. Do not
put the fabric in the dryer; air dry only. With time and constant cleaning,
the fabric will need to be renewed. The manufacturer recommends using
303 High Tech Fabric Guard. Available in an aerosol container, 303 should
be applied after the fabric has been cleaned and is dry. Two light sprayed-on
coats (allow the first to dry before applying the second) should suffice.
Should you need further information, contact the manufacturer at firstname.lastname@example.org.
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