Sudden splutter over 50mph

[ManyMinors]

That seems a complete contradiction of what you told us in your first post when you said the previous owner had this same problem and replacing the fuel pump had not cured it

You can perform a flow test with the pump and see how much fuel is pumped during a given time.

[MorrisJohn]

That seems a complete contradiction of what you told us in your first post when you said the previous owner had this same problem and replacing the fuel pump had not cured it

It is, yes. I must have picked him up wrong when we spoke a few days ago . Certainly throws a different light on things.

[MorrisJohn]

SOLVED!

Having changed the fuel pump for a reconditioned unit from club spares it’s like driving a different car. Many thanks to club sparesman.

Acceleration is smoother and more brisk. Whilst I don’t want to jinx, it the car has just completed a test run at 60-65mph for 15-20 minutes without any issues whatsoever.

Note: (I also checked the float chamber for signs of gunk/sediment in fuel but all appears clean as a whistle). I will now recondition my old pump to keep as a spare.