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  • Moeller Aluminum Anti-siphon Valve

    Moeller Aluminum Anti-siphon Valve

    Moeller anti-siphon valves prevent against fuel loss in the event of a fuel line break. This design...

    In Stock 

    Price: $13.51 to $17.86
  • Moeller Fuel Hose Primer Bulbs

    Moeller Fuel Hose Primer Bulbs

    Low Permeation Moeller squeeze fuel primer bulbs can be used with gasoline or diesel fuel lines....

    In Stock 

    Price: $24.02 to $26.54
  • Racor Fuel Filter Funnels

    Racor Fuel Filter Funnels

    Racor Fuel Filter Funnels feature rugged construction, a Teflon-coated stainless steel filter, a...

    In Stock 

    Price: $38.96
  • Racor T-Handle Vacuum Gauge Kit

    Racor T-Handle Vacuum Gauge Kit

    The Racor T-Handle Replacement Vacuum Gauge Kit includes silicone dampened gauge 0-30 inHG lid...

    In Stock 

    Price: $86.61
  • Groco Tank Selector Valve

    Groco Tank Selector Valve

    Groco Tank Selector Valve for isolating or combining two fuel or water tank sources. Four Position...

    In Stock 

    Price: $91.48
  • Moeller Shut-Off Valve

    Moeller Shut-Off Valve

    The Moeller Shut-Off Valve is primarily used to connect a permanent tank to a single motor in a...

    In Stock 

    Price: $22.42
  • Sierra Gasoline Fuel Water Separator Elements with Bowl
    CLEARANCE

    Sierra Gasoline Fuel Water Separator Elements with Bowl

    Collection bowl type replacement fuel/water separator filter elements with or without collection...

    In Stock 

    Price: $17.41 to $127.58
  • Moeller Elbow Thru-Hull Vent

    Moeller Elbow Thru-Hull Vent

    The Moeller elbow fuel vent provides proper ventilation to marine fuel tanks with vent hoses....

    In Stock 

    Price: $12.52
  • Brass Pipe to Hose Adapter - 5/16" Barb, 1/4" NPT Male

    Brass Pipe to Hose Adapter - 5/16" Barb, 1/4" NPT Male

    Brass pipe to hose adapter common to most fuel line applications. Size 5/16" Barb to a...

    In Stock 

    Price: $4.16
  • Perko Gas Tank Vents

    Perko Gas Tank Vents

    Perko gas tank vents meet the requirements of the USCG safety standards for gasoline fuel systems....

    In Stock 

    Price: $54.57 to $58.30
  • Moeller Conversion Capsule

    Moeller Conversion Capsule

    Convert your mechanical fuel tank gauge reading to electronic with the Moeller Conversion Capsule....

    In Stock 

    Price: $64.27
  • Mercury Marine Fuel Line Connector 22-13563T7

    Mercury Marine Fuel Line Connector 22-13563T7

    The Mercury Marine Fuel Line Connector 22-13563T7 is a double sealed clip-on type quick disconnect...

    In Stock 

    Price: $11.39
  • Seachoice Fuel / Water Separator Kit

    Seachoice Fuel / Water Separator Kit

    Seachoice offers a variety of fuel/water separator kits and replacement canisters for marine...

    In Stock 

    Price: $9.08 to $35.53
  • Seachoice Thru-Hull Vents

    Seachoice Thru-Hull Vents

    Seachoice Thru-Hull Vents have two vent holes, each of which are covered with a Monel wire mesh...

    In Stock 

    Price: $13.00 to $17.47
  • Seachoice Fuel Hose Primer Bulbs

    Seachoice Fuel Hose Primer Bulbs

    SeaChoice Primer Bulbs are gasoline, alcohol, UV and ozone resistant. Choose two sizes to fit fuel...

    In Stock 

    Price: $20.06
  • Moeller Fuel Filters

    Moeller Fuel Filters

    Moeller fuel filters trap the smallest particles and emulsified water from gasoline....

    In Stock 

    Price: $10.00 to $107.74
Items: 17 - 32 of 58 | Pages: Previous  1  2  3  4  Next 
 

Fuel System Basics

Whether idling through the no-wake zone or cruising across the bay at full throttle, any engine relies on a steady stream of clean fuel. Selecting the appropriate fuel components is easy when armed with a little knowledge of the engine requirements. Engine size mainly determines the size of fuel components required. Well designed fuel systems are engineered to deliver sufficient fuel flow through the spectrum of engine speeds. Improper components may reduce fuel flow, and like a dam in a river, everything down stream becomes fuel starved, resulting in a rough running engine. Engines excel with quality fuel components like those made by Sierra, Racor and Attwood.

Crucial to fuel flow is a well maintained fuel filtration system. Properly sized filters should extract contaminants without restricting flow. Marine systems have two stages of filtration, the primary or pre-fuel filter and the secondary, or engine filter. The primary filter is first in line. Its task is to extract water and large particle contaminants, and is therefore serviced more often. Primary filter systems offer dramatically improved protection over a single filter system alone. If your inboard or outboard does not currently incorporate a primary filter, an aftermarket model can easily be installed. Be sure to select a primary filter (also called a fuel water separating filter) that is sufficient to handle the engine flow rate at full throttle. Racor and Sierra each offer a range of easily installed primary fuel/ water separating filters. Next in line are Secondary filters, typically located just before the fuel pump, carburetor or injectors. Secondary filters function as a last chance trap to rid fuel of grit and debris, and are usually specific to OM (Original Manufacturer) and engine model.

To fairly evaluate filter performance, consider not only the smallest particle size a filter extracts, but also the efficiency at which it filters. For example, take two 10 micron filters. Each may filter out 90 percent of all particles 10 micron or larger at half throttle, but when fuel flow accelerates, a high quality filter maintains efficiency while a lesser filter allows far more contaminants to pass through. The efficiency also drops when filters are left in service beyond their usable life. Spent filters not only lose the protective filtration features but also dam the river, starving the engine of fuel. A vacuum gauge installed on the filter will detect the pressure drop caused by a clogged filter.

To maintain a solid stream of fuel minus air and obstructions, use marine grade fuel line components. AWAB clamps are the best choice for complete clamping force to secure fuel hose to barb fittings. A vibration resistant screw and a non-perforated inner surface with rounded edges help this clamp achieve a hose-friendly leak-free seal. Use these clamps in conjunction with brass fuel line fittings to connect tank vents, fuel fill hose, deck fill plates, and fuel feed lines. Any new installation must include a fuel line shut off valve. To achieve maximum performance at higher speeds or engine loads, all fittings selected should maintain adequate ID (internal diameter) throughout the fuel line. For outboard systems, Sierra offers complete replacement fuel lines to fit Mercury, Johnson, Evinrude, Honda and a host of others. They also offer replacement bulbs and connectors to keep outboard fuel lines primed and running.

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