FORM 95105130 (Rev C) 01/13
INSTALLATION INSTRUCTIONS
ELECTRIC FUEL PUMPS - Mr. Gasket Part No. 95P, 105P and 130P
FUEL PRESSURE REGULATOR - Mr. Gasket Part No. 2015
READ ALL INSTRUCTIONS CAREFULLY BEFORE BEGINNING INSTALLATION. #95P AND #105P ARE NOT COMPATIBLE WITH ALCOHOL OR
METHANOL FUELS AND ARE NOT FOR FUEL INJECTED SYSTEMS.
GENERAL INFORMATION
The Mr. Gasket Electric Fuel Pump #95P is a gravity feed
vane/rotor type high volume low pressure pump designed for
street applications. The operating fuel pressure is factory set at
7 PSI. Normally, a fuel pressure regulator is not necessary. We
recommend a 3/8” I.D. hose with this fuel system. #95P free
flows at 95 GPH and 65 GPH at 5 PSI.
The Mr. Gasket Electric Fuel Pump #105P is a gravity feed
vane/rotor type high volume low pressure pump designed for
strip applications. The operating fuel pressure is factory set at
12 PSI. This pump must be used with a fuel pressure regulator,
which is included. We recommend a 3/8” I.D. hose with this
fuel system. The fuel return line should be as large, or larger,
than the fuel line between the fuel pump and the regulator.
#105P free flows at 105 GPH and 70 GPH at 9 PSI.
The Mr. Gasket Electric Fuel Pump #130P is a gravity feed
vane/rotor type high volume low pressure pump designed for
race applications and is compatible with alcohol and methanol
fuels. The operating fuel pressure is factory set at 12 PSI. This
pump must be used with a fuel pressure regulator, which is
NOT included. We recommend Mr. Gasket Part. No. #2015.
We also recommend a 3/8” I.D. hose with this fuel system. The
fuel return line should be as large, or larger, than the fuel line
between the fuel pump and the regulator. #130P free flows at
130 GPH and 115 GPH at 9 PSI.
The Mr. Gasket Fuel Pressure Regulator #2015 is a return-style
fuel pressure regulator. The operating fuel pressure range is
4.5 – 9 PSI. The inlet/outlet size is 3/8” NPT. The fuel return
line size should be 3/8” I.D. or larger or the regulator will not
regulate properly. Refer to Figure 2.
When installing the fuel pump fittings, use a fuel resistant
thread sealant compound on the fitting threads. DO NOT use
thread sealing tape or silicone based sealant. Do not over
tighten fittings, as this could cause parts to crack, which may
cause fuel leakage.
MOUNTING PROCEDURE
Step 1
Mount the pump as close as possible to the fuel tank (at or
below the level of the fuel tank pickup) in a well ventilated area.
The pump should not be subjected to low ground clearance,
road debris or chassis movement. Avoid exposing the pump
and fuel lines to moving parts and hot surfaces, such as the
exhaust system. NOTE: Increasing distance between the pump and
tank will decrease pump efficiency.
Step 2
Using the pump mounting bracket as a template, drill two holes
for 5/16” bolts. Insert the rubber gaskets between the housing
for the motor and the mounting bracket. NOTE: Using two 5/16”
bolts, mount the pump in a vertical position with the motor on top to
ensure against a potential fire hazard from pump flooding.
Step 3
Connect fuel lines as shown in Figure 1 (A-no regulator or
B-includes regulator). If your fuel system requires a fuel pressure regulator, proceed to the instructions with the fuel pressure regulator. NOTE: Avoid unnecessary restrictions in hoses and
undersized fittings or hoses. All fuel line connections should be leak
proof.
FIGURE 1A
MR. GASKET ELECTRIC FUEL PUMP #95P (DOES NOT INCLUDE REGULATOR)
1MR. GASKET www.mr-gasket.com
FIGURE 1B
MR. GASKET ELECTRIC FUEL PUMP #105P (INCLUDES REGULATOR)
MR. GASKET ELECTRIC FUEL PUMP #130P (DOES NOT INCLUDE REGULATOR)
Step 4
If you choose to no longer use your mechanical fuel pump, make
sure to disconnect the fuel lines, plug the ports and bypass the
pump from the circuit. If you choose to remove your mechanical
fuel pump, make sure to seal the opening with a metal cover and
gasket. We recommend Mr. Gasket Part No. 1515, 1516, 1517,
9125G or 9126G depending on your application.
PRESSURE REGULATOR INSTALLATION
Step 1
Mount the fuel pressure regulator as close as possible to the
carburetor. Note: Do not mount the regulator on or near exhaust
manifolds. A bracket is provided for convenient mounting.
Step 2
Attach the fuel line from the outlet side of the fuel pump to either
side of the fuel pressure regulator. See Figure 1B above. All fuel
line connections should be leak proof. The fuel return line should
be as large, or larger, than the fuel line between the fuel pump and
the regulator. See Figure 2 for size recommendations.
FIGURE 2
FUEL RETURN LINE SIZE RECOMMENDATIONS
Fuel Return Line
Length/Distance
GAL. PER HOUR (FREE FLOW)
1 to 99 100 to 129 130 to 199
FUEL PRESSURE ADJUSTMENT
Depending on requirements, the regulator may need
adjustment. To increase regulator pressure, turn adjustment
screw clockwise; and turning the adjustment screw counterclockwise will decrease pressure. NOTE: Turning the adjustment
screw all the way will cause carburetor flooding. Make sure to use a
fuel pressure gauge when adjusting fuel pressure.
WIRING PROCEDURE
Wiring the pump to an oil pressure switch will provide
power only when the ignition switch is on and the engine is
running. This will prevent the pump from running if your engine
stalls. Use 14 gauge wire or larger. See Figure 3 or 4. We recommend Mr. Gasket Part No. 7872. NOTE: Disconnect the battery
ground cable before wiring the pump.
16’-20’ 1/2” 1/2” 5/8”
11’-15’ 3/8” 1/2” 5/8”
6’-10’ 3/8” 1/2” 1/2”
1’-5’ 3/8” 1/2” 1/2”
3/8” = 6AN 1/2” = 8AN 5/8” = 10AN
www.mr-gasket.com MR. GASKET2
FIGURE 3 - RECOMMENDED
WIRING WITH RELAY
FIGURE 4 - PREFERRED
WIRING WITH RELAY AND OIL PRESSURE SAFETY SWITCH
MAINTENANCE – PUMP DISASSEMBLY
If your pump fails to produce acceptable pressure, it may need
cleaning. Follow the steps below to dissemble and clean your
Mr. Gasket Electric Fuel Pump. Refer to Figure 5 while performing
the following steps.
Step 1
Remove the pump from the vehicle and clean pump exterior.
DO NOT immerse the unit in any liquid, as it could damage
the pump, resulting in malfunction. Place the pump on a clean
work surface.
Step 2
Remove the 5 bolts from the bottom of the pump, then the end
plate and gasket. Next, remove the rotor stop plate. IMPORTANT:
Take note of the direction of the rotor vane chamfer for proper reassembly and pump performance. The chamfer should be on the trailing
edge, facing out.
Step 3
Remove the flame arrestor screen and observe the exact location of the screen. Remove the rotor vanes and rotor by turning
over the pump.
Step 4
Unscrew the bypass screw and be careful as the bypass spring
behind it is biased outwardly. Once bypass spring is removed,
take out bypass plunger.
Step 5
Clean the housing, rotor and vanes, plunger and bore with carburetor cleaner. Next, use compressed air to blow the housing
and components dry.
Step 6
To reassemble your Mr. Gasket Electric Fuel Pump, first install
the rotor, and then the vanes in the correct direction (see Step
2). The vanes should slide easily into the rotor slots. Then place
the rotor stop plate over the rotor. Next, install the screen
ensuring that it is secured behind the screen stop. Install the
gasket and end plate making sure the gasket is positioned in
the housing recessed cavity. Next, install the plunger, making
sure it slides freely in the bore. Then install the spring and plug
with seal. Finally, install the 5 bolts into the bottom of the pump.
Step 7
Install the fuel pump on your vehicle. Start the engine and verify
there are no leaks.
Step 8
Verify there are no leaks after running engine.
3MR. GASKET www.mr-gasket.com
FIGURE 5
PUMP DISSASEMBLY
TROUBLE SHOOTING
BOUNCING OR ERRATIC FUEL PRESSURE
- Make sure bypass plunger slides freely in bore. If not, remove
and clean plunger and bore with carburetor cleaner.
- Install a return style fuel pressure regulator if one is not already installed.
- Check for and remove any unnecessary restrictions in hoses
as well as excessive fittings.
- Install a fuel return line that is one size larger than the feed
line.
- Confirm the fuel return line pressure is free flowing back to the
fuel tank with less than 2 lbs. of pressure.
MR. GASKET IS A TRADEMARK OF PRESTOLITE PERFORMANCE
10601 MEMPHIS AVE #12, CLEVELAND, OH 44144
216.688.8300 FAX 216.688.8306
www.mr-gasket.com MR. GASKET4
PUMP IS LOUD OR MAKING EXCESSIVE NOISE
- There may be a leak you cannot see or smell. Double check
all the fittings and hoses.
QUESTIONS
Please call our Tech Support line at 1-216-688-8300, M – F,
9 – 5 EST. Please have the part number on hand when you call.
FORM (Rev C) 95105130
01/13
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