does anybody know why one cylinders spark plug looks rich but the others are lean also that cylinder builds the 150psi within 3 turns the other spark plugs look like its lean and are really hot the fuel pressure drops when i turn off the car but its really slow and i dont know why it would smoke because of that

 

whoa wtf did u say. slow down man, what engine is it, what pistons, how many miles, who built it. wat color is the smoke, how does it run, CEL? what are you using for fuel management, what kind of injectors. what are the other cylinders at on a compression test.

try to answer all those and someone might be able to help you.

 

the oxygen code turns on sometimes- it smokes white but doesnt smell sweet or doesnt look blue the compression is good in all cylinders

other problems with car- overheats leaks oil replaced thermostat and cam seals