1998 JAGUAR X308 vapour

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Page 39 of 2490

JAGUAR X308 1998 2.G Workshop Manual Before inspecting a component for wear or per
 forming a dimensional check,
 ensure that it is absolutely clean; a slight smear  
of grease can conceal an incipient failure. When a component  is to be

Page 527 of 2490

JAGUAR X308 1998 2.G Workshop Manual E
ngine Management System Components 
Electronic Throt
 tle 
The
 electronic throttle assembly, in resp
onse to signals from both the driver and the ECM, adjusts idle speed, sets the 
throttle valve t

Page 528 of 2490

JAGUAR X308 1998 2.G Workshop Manual Speed an
 d load  
Coo
l
 ant temperature  
Ti
me el
 apsed from start up  
Cl
osed l
 oop fuelling  
Determination of the vapour concentration  is made by stepped opening of the EVAP valv

Page 1148 of 2490

JAGUAR X308 1998 2.G Workshop Manual Evaporative E
missions - Evaporative Emissions 
Description an
d Operation
  
To reduce the emission of fuel vapour, th e fuel tank is vented to atmosphere through activated charcoal adsorption canist

Page 1149 of 2490

JAGUAR X308 1998 2.G Workshop Manual The E
VAP canister purge valve controls th
e flow rate of fuel vapour drawn into  the engine during the canister purge 
operation. The valve is opened by a vacu um feed from the induction elbow : the

Page 1150 of 2490

JAGUAR X308 1998 2.G Workshop Manual  
Thi s
  system uses a single charcoal canister with a pressure
 control valve between the canister and the fuel tank vapour 
outlet. A vacuum control pipe is connecte d from the engine intake induct

Page 1151 of 2490

JAGUAR X308 1998 2.G Workshop Manual  
The evaporative l
 oss flange assembly is fitted to the top of the tank via a seal and locking ring. The assembly is removeable 
complete with the fitted components. 
The vapour vent / rollover valv

Page 1152 of 2490

JAGUAR X308 1998 2.G Workshop Manual  
The ru nning loss
  system has the following features : 
a 
normall
 y open pressure control valve is fi
tted at the lefthand side of the tank.  
two charcoal
  canisters are connected in seri
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