Fuel lines changed now misfiring

[stumpage]

Last week I had a leaking fuel line. Had those replaced on Wednesday in order to make the journey to Le Mans early Thursday. Anyway I had driven about 20 miles when the car missed, just a little hesitation, then again. This happened a few times. I turned back and took the other car in the end.

So the question is would changing the fuel lines have caused this ( plenum removal etc) or is it something else?

[SILICONEKID340HP]

Air leak !

[Tyre Tread]

Kinked pipe or replacements have been re-routed to close to a heat source causing the fuel to boil

[big geoff]

small piece of rubber in fuel rail blocking injector

[Marty V8]

Do you know what fuel lines were used? Not insinuating that this is definately the case in this instance, but, non-branded cheap fuel lines can soften and disintegrate although I would have thought it would have taken a bit longer for this to start occurring if it were the case.

[Simon says]

If you removed the plenum you also disturbed the coil and its this area i would turn my attention to before blaming the fuel system.