my engine is running fat as hell...wayy to much fuel, when i turn on the car the fuel light plumets to below empty and it wont even crank, when i throw it in reverse when it does start it runs like **** and i sound like a V block thats cammed to all hell, when the car runs the gas guage misreads about a 1/4 tank below what it actually is, and in my #3 cylinder the spark plug is always black.......think its the main fuel relay?

 

i think you've lost compression on that cylinder or your fuel injector is stuck open. how was it running before? when did it change?

 

its been running that way ever since i got the car...about 3 weeks. i know the injector is messed up but it would cause my car not to even make an attempt to turn over, thats what leads me to belive its the MFR

 

please help guys

 

If your injector is bad it will cause it to leak and spray more fuel causing the plug to foul thus your car would run on 3 cylinders sounding like an sti