Having problems with your 1986 Jaguar XJSC ?

1984 Jaguar xj6 runs rough on cold start and fuel rich. seems to run ok once engine has warmed up.

Posted / edited by AnonymousUser on : 22-10-2018

Answers :

Hello Drankin ;
\015\012 The causes of this particular problem can be that of many . Is this car a daily driver or a garage queen ? I would attack this problem by ruling out the items with the lowest cost first . Please note that the info below are some of the steps I would take at tackling this problem .
\015\012
\015\012a) Check that your oil filler cap is on tight and that the seal is good .
\015\012b) Check the electrical connections to be certain nothing is loose .or disconnected .
\015\012c)If the car has been sitting, run it for a while and try to empty the tank of that old gas . I would refiill it with new gas and fuel injector cleaner .
\015\012d) I would change the fuel fiter with a new one .You must do this with the engine depressurized and off with both filler caps open .
\015\012e) You could also check for air leaks at the intake manifold .
\015\012f) How is your exhaust ? Is it leaking ?Is it blocked at the ends ?
\015\012g) Check the the Butterflies on the Air-Flow-meter . Make sure that they open and close easily . There are spray on cleanes for this . Do not hone the openings .
\015\012h)Relace the charcoal cannister .
\015\012i) I would do a compressionon all 6 cylinders
\015\012j)Check the fuel pump for proper pressure or replace it .
\015\012k) At the emission's station check to see what is the idle mixure and you may need to have the idle mixure adjusted on the airlow meter .
\015\012L) Check/ Rule - Out the Auxillary air valve .
\015\012m) Check/ Rule - Out the Fuel Injectors .
\015\012n) Check/ Rule -Out the Coolant temperature Sensor
\015\012o) Check/ Rule - Out the Air Temperature Sensor
\015\012p) Check/ Rule - Out the Thermotime Switch
\015\012
\015\012I hope that this has been helpful to you .
\015\012
Repair Help & Product Troubleshooting for 1986 Jaguar XJSC

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