Hi all been suffering a missfire cylinder 4..ive changed the coils and plugs and even done the fuel filter and mass sensor.but after clearing code it seems to come back...what else could it be?  Thank you in advance 

53 minutes ago, Rundlc1981 said:

ive changed the coils and plugs and even done the fuel filter and mass sensor.but after clearing code it seems to come back...what else could it be?

It could be the injector or the injector pipe, or the electronics controlling the injector, or the electronics controlling the coil pack, or the LT wiring to the coil pack... There's another 5 guesses for your parts cannon.

Perform a cylinder compression and leakdown test.

Ive got some freeze frame data no idea what it means but can anyone make sence of it