Hi,

After try and search lot’s of things I can’t start my jag’ and need your help.
It’s a 2003 jaguar S-type supercharged with 140 000km.

I was on the road and suddently she stalled and impossible to start anymore.



Fuel filter is new, spark plugs have 10 000km, I try and ignition is OK.

I have a OBD reader and only found 2 fault who don’t help me (B1582 and P1582).

Fuel pressure with OBD reader is 240kpa (2.4 bars) just with ignition ON and 400kpa (4 bars) when I try to start (when starter turn). I thing it’s to low (but no fault on OBD reader).

Very rarely it start with difficult but stall again.

please help me to start, I fed up to drive my diesel Land Rover

 

My OBD reader

 

how new is the fuel filter and who put it on....did your problem occur shortly after the new filter....check out this page...
http://b1582.enginetroublecode.com/ code cause is probably the culprit

 

Your pressure is just a little high . It should read 55psi / 379.8kpa .
thats only if your fuel pressure regulator is reading correctly.
i have had two FPR’s fail on mine .
the first one that failed read high 60psi iirc. when in fact ,
the fuel pressure was way low about 38-40 psi.
no codes And the car ran crap .

the second one that failed threw a code for a failed FPR and was running way rich
but only showing 45psi . & p0191
I put a mechanical gauge on the Schrader valve this showed an actual 62psi .
I guess my moral here is you can’t trust the digital readout of a failed sensor.
you need to back it up with a mechanical gauge on the Schrader valve ,
this is found on the right hand side of the fuel rail with a little plastic valve cap .

Your p1582 is flight recorder is storing data . This may hold the key to the knowledge you require.
but this can only be accessed via dealer level equipment.

 

I change the fuel filter after my problems but without success

 

You have to go 'back to basics' if you havent already done so, which means starting with checking the basics such as battery, charge, alternator etc. etc. Any fuel getting beyond the filter?
Are the points okay?
Good luck. As cool as your old diesel Land Rover is I feel sorry lol.

 

spark plug have got be tested and are ok.
It may be a sensor in the exhaust ?

 

every basic things have be tested :
battery, fuses, filter, leakage, inertia switch....
ignition is OK and I have fuel pressure in the injection ramp....

 

yes but what pressure precisely? It needs to be accurate .
you say 400kpa . Well that’s not what it’s supposed to be .
so—-
I would urge you as I stated previously to check the fuel rail pressure with a mechanical fuel pressure gauge attached to the provided Schrader valve on the fuel rail .
As a failed FPR can/will give false readings .

 

Make sure the fuel filter was installed properly with the arrow pointed towards the engine.

 

yes it’s true I will buy a mechanical gaude to test.




Is it the good shrader valve to mesure pressure ? If I press it with a little screwdriver I have no pressure (no spchitt or other song).

thank you everybody for your help

 

I wonder if you are asking if the valve cap in your photo is the Schrader valve?

if this was a question then no it is not it !
that is for air conditioning.

the fuel rail is on the engine with
a (in my case) blue valve cap.

rear r/h side of the engine .

 

Ok thank you for your picture.

after such in my engine bay and in the forum, some car has no schrader valve in fuel line, like mine.
No problem I will remove a sensor (fuel temperature or fuel pressure) to take the pressure.

I think I will to disassemble a injector from the fuel rail to look if it work.
With my OBDreader I see that injectors (all) are every Time on OFF when I try to start my engine.
maybe it’s because it’s to fast for my reader, but like this I will be sure that injectors open.
What do you tkink about that ?

 

After look it’s not easy to remove a injector.
I will try to see if I can check voltage witch my multimeter, or I will find and used injector in good condition for trying this.

 

sorry all of the S type R’s do have a Schrader valve.
have another look . We’re my picture showed you .

 

Notting in my s-type.
I'm sure, last year I change throtte body and research vaccum leak, I never see any schrader valve

 

wow , that blows . That’s the First time I Have seen that blank .
i notice yours is LHD .
Does the whole delivery system and fuel filter change sides as well ?
my RHD has the filter and delivery pipe on the left side of the car .
Have you checked the other side Fuel rail as well ?
I have seen Range Rover 4.2, XKR, XJR And na 4.0Jags
and several STR’s all had the Schrader valve. We’re mine is .
It must have one as jtis Manual says to use it for a no# of diagnostic reasons .
otherwise you could make one that tees in with the fuel filter pipe .

 

hay buddy ,
this is a location i have not seen before .

, try here

again shown here on a supercharged ajv8 in this location .

photos stolen from these forums .

 

I search but nothing in mine.
I ordered a fuel pressure gauje with lot of adaptor, it would be easyer with a schrader valve but I going to get here.

 

Hi, my jaguar has start today not a long time (5 or 10 seconds) and stalled again.
The engine don’t turn very good like ignitions faults, I have the impression that press the accelerator pedal (so open the throttle) help the engine to not stall.

2 new faults on OBD reader : B1367 and B1368

I noticed that this is always at the first tempt that the engine start.
All the time I insist without start.