Jaguar XK140 cutting out when hot.

[RodMod]

Hi thought I'd ask a question for my Dad as he's having a few problems with his XK.

The car starts and runs fine then when it gets warm (or we hit traffic) it coughs, splutters, backfires and then cuts out. So far we have fitted a kenlow fan (the radiator has been re-cored), a new coil and condenser. I can hear the petrol pump so think that is working ok. Someone suggested something electrical, but we've done the coil and condenser and don't know what to try next?

Thank you in advance.

Rod.

[RodMod]

a8hex said:

I've been having the same problem on my XK150, I'm hoping that its the ignition as that is currently being replaced. There was a thread about it here back over Christmas/New Year time.

http://www.pistonheads.com/gassing/topic.asp?h=0&a...

Thank you for that I'll have a read up on that.

Rod.

[RodMod]

Vanin said:

Fuel vaporisation is possible, but check the rotor arm first as the easiest thing to replace.
Buy a red one from the distributor doctor. (Google it). The plastic is superior. The original Lucas bakerlite used to break down over time allowing the spark to travel down the distributor stem instead of out to the plugs.

Later cheap rotors made in the Far East were even worse, especially when they held the brass part on with a rivet.

Thanks for that, have ordered one should be here Wednesday.

Rod.

[RodMod]

Vanin said:

Did it cure the problem or are you cursing me for wasting time and money?

Haha, I would never curse any help I get.

Unfortunately the problem is still there although takes longer to happen now?

So to recap we have fitted

New condenser
new coil
new red rotor arm
new spark plugs

also had the feeler gauges out last week.

I'm away this weekend so I'll be checking some wires next week would love to sort this as the weather is so good lately.

Rod.