5
Operating Instructions and Parts Manual
27167
10/18
2018 OEM
®
FUEL PRESSURE
TEST KIT
10/18
2018 OEM
®
• Attach hose and pressure gauge assembly to adapter top
fitting and tighten fitting until finger tight.
FOR IMPORT AND SOME DOMESTIC VEHICLES
WITH A BANJO BOLT CONNECTION:
Note: Included is the most popular banjo bolt with
12 mm x 1.25 thread.
• Relieve fuel system pressure by following instructions in
vehicle service manual.
• Remove the vehicle’s fuel bolt at location described in
service manual. Use shop towels to catch any released
fuel.
• Install banjo bolt test adapter in place of fuel bolt.
Position banjo bolt gaskets on either side of banjo.
Banjo with fuel supply line attached should be
sandwiched between banjo bolt gaskets.
• Tighten banjo bolt test adapter finger tight, then gently
snug with wrench.
• Connect hose and pressure gauge assembly to banjo
bolt test adapter fitting. Tighten gauge hose fitting
finger tight.
FOR IMPORT AND DOMESTIC VEHICLES WITH
RUBBER HOSE CONNECTIONS:
• Relieve fuel system pressure by following instructions in
vehicle service manual.
• Disconnect the vehicle’s rubber fuel line hose at location
described in service manual. Use shop towels to catch
any released fuel. Leave rubber hose attached to fuel
line.
• Install matching size adapter hose and hose clamps on
dual manifold test adapter.
• Connect test adapter hose at location where vehicle’s
fuel line was disconnected.
• Connect vehicle’s fuel line to other side of dual manifold
adapter. Use vehicle’s hose clamps on rubber hose.
• Tighten all hose clamps securely.
• Connect hose and pressure gauge assembly to dual
manifold test fitting. Tighten gauge hose fitting finger
tight.
5. Place end of 6 Ft. bleed-off hose in an approved
container for fuel. Bleed-off hose must remain in
container until testing is complete.
6. Turn all accessories OFF (Radio, AlC, Blower Fan,
Headlights, Windshield Wipers, etc.).
7. Re-activate fuel pump and turn ignition key ON.
Do the following checks:
• Listen for fuel pump. Pump should run for approximately
2 seconds.
• Pressurize fuel system by cycling ignition ON and
OFF every ten seconds until fuel pressure is at
manufacturers’ specifications (see vehicle service
manual).
• Check fuel system for leaks. If leaks are found, turn
ignition key OFF and immediately clean up fuel!
• Read fuel pressure from dial face. Pressure should rise to
manufacturer’s specification and hold steady.
• If fuel pressure is not within manufacturer’s specification,
cycle ignition key 2 or 3 more times. If fuel pressure is
still not within manufacturer’s specifications, service
vehicle according to vehicle service manual, then retest.
