I had the same problem which turned out to be spark flashover (to the +
terminal) at the coil ht lead on moist mornings. I put some silicone in the
boot (as opposed to new wires) to fix it, but the real problem was plugs
that had never been changed (120K miles) and had a gap that twice what it
should have been. Spray water mist from a spray bottle onto the coil when
the car is running to test for this.
-jk
"Paul" <paul.snow361@mod.uk> wrote in message
news:eeb2bb7d.0503240701.7def285@posting.google.com...
> Can anyone help. My 1994 4.0 XJ40 Sovereign has developed a slight
> problem on starting first thing in the morning. The starter engages,
> everything is fine but the engine does not fire up until the instant I
> release the key back to the on position. It used to start after about
> one second with the key engaged at the start position (as normal). It
> only does this first thing in the morning. After that it starts like
> any normal car. The only potential clue is that I have a Fuel Fail 14
> code (coolant temp sensor out of range) which I intend checking this
> weekend. Also I have seen that there may be two feeds to the coil to
> decrease the voltage to the coil when running compared to when
> starting. Are these likely to be possible causes or is it something
> else?
>
> Cheers
>
> Paul
Linear Mode
