Jaguar XJ40 1995 1996 Workshop Manual PDF

Bulletin Number 17-8 Date of issue 1/97 Page 1 of 2
Remove and destroy Bulletin 17-8, dated 5/96.
Replace with this Bulletin.
Revisions are marked with a bar and in
bold textbold text
bold textbold text
bold text.
ISSUE:ISSUE:
ISSUE:ISSUE:
ISSUE:
When investigating a customer complaint of poor “hot start” on 1995-96 MY XJS
Range vehicles within the above VIN range, verify that the fuel tank pressure
control valve (Rochester valve) is operating properly.
ACTION:ACTION:
ACTION:ACTION:
ACTION:
After verifying a customer complaint of poor “hot start” (extended cranking) on
1995-96 MY XJS Range vehicles within the above VIN range, check the fuel tank
pressure control valve as follows:
1. Raise vehicle on hoist.
2. Remove the left front wheel.
3. Remove the liner from the wheel well.
4. Disconnect the vacuum hose from the control valve.
5. Connect a vacuum tester to the pressure control valve fitting.
6. Apply a vacuum of
2.94-14.7 in. Hg. (0.1-0.5 bar)2.94-14.7 in. Hg. (0.1-0.5 bar)
2.94-14.7 in. Hg. (0.1-0.5 bar)2.94-14.7 in. Hg. (0.1-0.5 bar)
2.94-14.7 in. Hg. (0.1-0.5 bar). If this vacuum cannot
be held
for 2-3 seconds for 2-3 seconds
for 2-3 seconds for 2-3 seconds
for 2-3 seconds, the valve is faulty.
7. Disconnect the vacuum tester from the control valve.
8. If the valve held vacuum, reconnect the vacuum hose and lower the vehicle.
9. If the valve is faulty, cut the retaining strap from the fuel tank vent hose.
Remove the retaining clip and disconnect the vent hose of fuel tank from the
valve.
10. Loosen the retaining clip and disconnect the hose of the carbon canister from
the valve.
11. Remove the defective valve.
12. Check a new valve by applying a vacuum of
2.94-14.7 in. Hg. (0.1-0.5 bar)2.94-14.7 in. Hg. (0.1-0.5 bar)
2.94-14.7 in. Hg. (0.1-0.5 bar)2.94-14.7 in. Hg. (0.1-0.5 bar)
2.94-14.7 in. Hg. (0.1-0.5 bar)
as in step 4.
13. Install the new valve after checking.
14. Reconnect the hose of the carbon canister to the valve.
15. Reconnect the vent hose of the fuel tank to the valve. Install a new tie strap.
MODEL XJS Range 1995-96 MY
VIN 194775 - 226645
DATE 5/96
TECHNICAL BULLETIN
17-8
Amended
1/97
Poor Hot Start – Tank Pressure
Control Valve – Check Operation