Ok Disco 2 4.0 V8 developed horrible misfire.
I was thinking plugs/leads, anyway put it on diagnostic and came up with fault P1319, looked that up in RAVE-Misfire at low fuel level. Problem is I've always kept fuel over 1/3(6 gallons).
I checked plugs(I use Bosch Super 503) they were BLACK, so I cleaned and refitted, wagon still runs like a dog.
Now after clearing fault codes and re-testing I get other codes P1175(rich on right bank),P1129(swapped llamda sensors)never touched sensors! and of course P1319.
Been reading some other forums and many people say MAF straight away, is there any way of testing MAF with a multimeter. Idled it up to temperature-really rough, looked underneath and the R/H cat was RED-this cannot be good.
Your thoughts and ideas are always welcome