Brakes - Suzuki Engine 2002 GRAND VITARA SQ420 Service Manual

ENGINE GENERAL INFORMATION AND DIAGNOSIS (G16/J20 ENGINES) 6-7
Fuel pressure relief procedure
CAUTION:
This work must not be done when engine is hot. If done
so, it may cause adverse effect to catalyst.
After making sure that engine is cold, release fuel pressure as fol-
lows.
1) Place transmission gear shift lever in "Neutral" (shift selector
lever to "P" range for A/T vehicle), set parking brake, and
block drive wheels.
2) Disconnect fuel pump relay (1) from its connector.
3) Remove fuel filler cap to release fuel vapor pressure in fuel
tank and then reinstall it.
4) Start engine and run it till it stops for lack of fuel. Repeat
cranking engine 2–3 times for about 3 seconds each time to
dissipate fuel pressure in lines. Fuel connections are now
safe for servicing.
5) Upon completion of servicing, connect fuel pump relay to its
connector.
[A] : Left hand steering vehicle (Other than canvas top model)
[B] : Right hand steering vehicle (Other than canvas top model)
[C] : Left hand steering vehicle (Canvas top model)
[D] : Right hand steering vehicle (Canvas top model)
1. Fuel pump relay
2. Fuse box
3. Junction (Fuse) box
Fuel leakage check procedure
After performing any service on fuel system, check to make sure
that there are no fuel leakages as follows.
1) Turn ON ignition switch for 3 seconds (to operate fuel pump)
and then turn it OFF. Repeat this (ON and OFF) 3 or 4 times
and apply fuel pressure to fuel line (till fuel pressure is felt by
hand placed on fuel return hose).
2) In this state, check to see that there are no fuel leakages
from any part of fuel system.