Fuel Rail and Fuel Injectors - EFI-ETC
1. To install fuel rail, proceed as follows:
181
A. Cylinder 1 (Oil Filter) Side:
• Place fuel rail into position, so that protective
sleeve is positioned between two hose clamp
bosses on the intake manifold
• Installclamp on fuel rail hose.
• Start fastener (I,Figure 181) to secure clamp to
intake manifold boss. Tighten screw to 90lb-in
(10.2 Nm).
• Firmly push quick disconnect fitting(J)onto fuel
outlet fitting. Gently tug on fitting to verify that it
is properly seated and secured.
B. Cylinder 2 (Starter Motor) Side:
• Install clampon fuel rail hose. Verify that EFI
wire harness is captured in opposite side of
clamp (ignition coil, fuel injector, and ground
wire ring terminal conduit).
• Start short hex flange screw(H) to fasten clamp
to intake manifold boss. Tighten screw to 90 lb-
in (10.2 Nm).
• Rotate fuse/relay block bracket inward to align
clamp and bracket holes (clamp positioned
below bracket).
• Install long hex flange screw(G)to fasten
bracket to clamp. Tighten screw to 90 lb-in
(10.2 Nm).
• If equipped, connect throttle lever module
connector, and then install hex flange screw
(E) to fasten throttle lever bracket (F) to intake
manifold boss. Tighten screw to 90 lb-in (10.2
Nm).
2. Lightly lubricate fuel injector o-rings with clean engine oil.
3. Install fuel injector caps onto fuel injectors.
4. Install retaining clips to secure fuel injector caps to fuel
injectors.
NOTE: Be sure retaining clips are properly installed. Side
slots on clip engage lip on cap, while tab(K)on fuel injector
body is captured between prongs(L) on clip.NOTE:
5. Install fuel injectors into intake manifold bores.
6. Install 2 fasteners (D and C)to secure fuel injector cap
flanges to intake manifold. Tighten fasteners to 110 lb-in
(12.4 Nm).
7. Connect fuel injector connectors(B and A). Push in white
secondary locks to secure.
8. Rotate each fuel injector until connector makes light
contact with the intake manifold.
Carburetor and Spacers
Your engine may be equipped with either a cyclonic air
cleaner assembly or a low-profile air cleaner assembly.
On engines equipped with a low-profile air cleaner, the air
cleaner base makes use of 4 studs that secure the intake
adaptor, carburetor, spacers and gaskets to the intake
manifold.For this style of air cleaner, proceed to Low Profile
Air Cleaner Equipped Engines, see Figure.
Engines equipped with a cyclonic air cleaner assembly will
have an intake elbow thatmakes use of 4 studs to secure the
carburetor, spacers and gaskets to the intake manifold.For
this style of air cleaner, proceed to Cyclonic Air Cleaner
Equipped Engines,see Figure.
Cyclonic Air Cleaner Equipped Engines
1. Install the new gaskets and spacers between the
carburetor and intake manifold (Vertical Shaft engines)
or intake elbow (Horizontal Shaft engines).
140 vanguardpower.com
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