lemon bought
 

well this a screwed car,but i'm not giving up. here's the thing 3thru 6 (plugs) are fouling out with in about 300 miles. any clue in the ingition system that would allow such a problem would be some help,also how is the testing done on the ignitor and coil packs. yes my spelling sucks:help:

hmm maybe timing is off? save this link Cygnus X1 - Supra it has the mk3 tsrm. i beleive it is for a 91 but most of the material is usable for all mk3's

i thought the same it is dead on

Are the other two just a little fouled out or not at all? If your fouling out plugs, I would imagine it's because you're getting too much fuel. If your getting too much fuel, something is telling your computer to deliver that extra fuel. A bad 02 sensor or ect sensor? Any codes?

a faulty o2 sensor will may cause the ecu to pull timing or like said above, increase fuel

thanks i'll start with ect sensor. the one this in now is new,but new don't always good.and the o2 is an autozone part, maybe go oem?