Engine trouble
Engine trouble
OK i went to get emissions the other day and i failed, high NOX (over by about 300). everything else passed by about 100. i can post the numbers later if need be. ive looked into it and people say its probably the EGR, i rechecked all the vacuum lines with a gauge and everything check out, i got a rising vaccum from 0-25 for rpms 1000-3900 on the egr/bpt line, at 4000 it seems like the valve shuts off and drops to 0. So then i checked the plugs, maybe i was running hot or lean, all the plugs looked fine i think. the first 3 were the same, black soot around the base, spark gap was clean with a bit of ashy white residue. the 4th was the same except the ashy white residue was more of a rust color. I also did a compression check that came back 150,150,152,150. Next i looked to the exhaust. the muffler tip has a black a soot on it and the exhaust is steamy (leaking head gasket?). its real bad on startup and if i idle for very long. I checked the oil and there is no coolant in it but i am going through about 2 quarts per oil change. i also check the timing and its dead on at 15 deg btdc. I just got the car and so im trying to fix it up. when i changed the coolant it looked real bad, looked like alot of rust in it. its a 1990 wirth the ka24e. a friend of mine who does domestic stuff said to retake it with race gas and that will pass me. any other ideas or suggestions?? I am planning on going turbo sometime this year so is 150 compression ok? Oh and please dont respond "Go SR!" thats not gonna help me, ive looked into it, but i wanna build the KA. Thanks for your help.
