No Start May Be Caused By Vacuum Signal Line

91jaguar01

SECTION: 18

No: 19


ENGINE MANAGEMENT


Model: XJ-S Date: FEBRUARY, 1991

KEY POINTS: FOULED SPARK PLUGS

FIG. 1:

ISSUE:

No start or engine misfire may be caused by disconnected, restricted or leaking vacuum signal line to the fuel injection ECU. Spark plug foul may also occur.

ACTION:

Check the vacuum damper reservoir, (CAC 4968, fig. 1), for damage. Also make sure that the vacuum signal line from the inlet manifold balance pipe to the ECU is connected and not kinked or restricted.


WARRANTY INFORMATION:

Fault Code: 1TAY
Repair Operation Number: 17.55.11
Time Allowance: 0.10 hrs.