Question about 2003 Jaguar X-Type

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X type converted to LPG. It runs OK on LPG but not petrol

I had my x type converted to LPG. It runs OK on gas but on petrol it splutters and does not run properly. I have been told the common rail fuel pressure is low. If I stop the engine and restart it it sort of works providing I do not press hard on the accellerator. Any suggestions? As it runs OK on gas it does seem to be a fuel injection problem????

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  • Jaguar Master
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Areas to check are the fuel pressures, fuel hoses, fuel crossover solenoid
It indicates that the ECM is receiving the correct information from the sensors to adjust for LPG but when crossed over to petrol signals from sensors are not as clear as they should be
This can be from a power drain to components caused by a faulty solenoid or relay that is reducing the voltage available to the sensors ( normally in the air intake system or the heated oxygen sensor in the exhaust manifold )
check all harness connections and wiring
if you are checking it all your self then a workshop manual that has all of the voltages for each sensor would provide help

Posted on Oct 12, 2017

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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: common rail system

I dont have no parking lights

Posted on Aug 04, 2008

veteran78
  • 4 Answers

SOURCE: XJS V12, 1986. Loses power and splutters on hard acceleration

Most probably is the crank sensor under engine worn out. )0 % trobleshut starts here.
Einar Norway

Posted on Dec 28, 2008

mecanica03
  • 918 Answers

SOURCE: JAGUAR S TYPE DIESEL WILL NOT START!

check the fuel pump

Posted on Apr 12, 2009

  • 11 Answers

SOURCE: 1984 Jaguar xj6 runs rough on cold start and fuel

Hello Drankin ;
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 .

a) Check that your oil filler cap is on tight and that the seal is good .
b) Check the electrical connections to be certain nothing is loose .or disconnected .
c)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 .
d) 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 .
e) You could also check for air leaks at the intake manifold .
f) How is your exhaust ? Is it leaking ?Is it blocked at the ends ?
g) 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 .
h)Relace the charcoal cannister .
i) I would do a compressionon all 6 cylinders
j)Check the fuel pump for proper pressure or replace it .
k) 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 .
L) Check/ Rule - Out the Auxillary air valve .
m) Check/ Rule - Out the Fuel Injectors .
n) Check/ Rule -Out the Coolant temperature Sensor
o) Check/ Rule - Out the Air Temperature Sensor
p) Check/ Rule - Out the Thermotime Switch

I hope that this has been helpful to you .

Posted on May 25, 2009

  • 1 Answer

SOURCE: engine gives a little miss while traveling out on the road

had the same bother, it was the lamba probe. hope this helps you

Posted on Jun 29, 2009

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1 Answer

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