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Message: <blockquote data-quote="Dirtcar75" data-source="post: 986935" data-attributes="member: 16876"><p>Ok well i bought this really clean 95 auto gt guy said he just put a new dist and ect sensor in it... I ddnt think anything about it bought it and drove it home... I knew when i drove it the power seemed a little flat but whatever the engine ideld perfect didnt miss shifted great ext... Decided to do plugs today since the new dist and plug wired id just do plugs and a fuel filter cause it didnt really run quite like it should i checked the timing and it was WAY retarded like the tdc mark was at 12 oclock when it was sparking with the stint out... so i set it at like 10-11 plugged it back in drove it and damm it spark knocks bad when just easy driving... Ok so i decided it was a lean knock checked fuel filter it was old and plugged put the new on on and still spark knocks... It will only not spark knock if the timing it set with the stint out at like 5* atdc you can drive it easy and it dont knock but if you get on it it still spark knocks.... Like i said it idles perfect dont missfire i have put plugs in it (same plug i took out of it awsf42c's) gapped at .055 i have also cleaned the t body and maf and iat sensor put dialectric on every connector i can unplug without taking the upper off... I checked the vacume 17"'s at an idle... I also disconnected vacume from the fuel press reg and unplugged the ect sensor to force it rich with no help.... If memory serves me correct both stft were like -3 to -5 and ltft was around +13-15 and it had 2 codes it it one in the 180s and one in the 190s 181 and 191 i think... 02's are cycling fine tps and maf seem to be working as they should watching the datastream... I am bumfused unless fuel pressure is low (havt been able to check it yet) on my advance timing light total timing is in the low 20s at an idle and goes up to the high 30s when the engine is brought above and idle so i dont thing its a timing issue! But funnier things have happened.... Driveability is not my strong suit ao and and all help would be great thanks in advance! D.J.</p></blockquote><p></p>