1JZGTE missing, over fuelling

[rtrona]

Hey guys,

after having my 1jz powered cressida running good for about a year it has developed a nasty miss, and is over fuelling. Fuel consumption slowly got worse and worse, latest fuel consumption was 28.8l/100km's and that was all town driving, in a rather hilly town.

After giving the car a quick squirt up the road it developed a nasty miss, sounds like its running on 4 cylinders, and is pouring heaps of black smoke when revved. The car was fine at WOT and when it was up in the revs, so i pulled out the very fouled plugs and put new ones in. Problem got worst, misses constantly now, and if revved and backed off will pop massive flames.

Any idea's? Completely shagged Oxygen sensor? No engine light, coil packs are all good looking no cracks etc, ECU is fine, capacitors replaced, Temp sensor is new.

cheers,

Mark

[midnight_purple_GA70]

check vac lines to map sensor...

[rtrona]

Ok will do, just found it really odd that it happened after i gave it a boot full.