I SAID INJECTOR FIRST!!! jk do a compression test, and leak down test, and examine the injector operation...that will help you pinpoint the problem.

 

put a thermostat in too. my car ran like shit with no thermostat. it affects the coolant temp sensor too, sinece the motor is cold all the time, it will be more rich.

 

did a compression test its good all the way across. Im putting a thermostat in now.

 

ok put the thermostat in bled the system out with the heat on full for about 30 mins til there where no bubbles...now its over heating within seconds of driving it. Took it back bled it out again just to be sure and the same thing happened again...thats why I had the thermostat out in the first place...although I will say it does'nt seem to run rich when the temp is at 190 or higher.

 

oh yeah btw the:
thermostat
water pump
radiator cap
resivior
electric fan

are all brand new...the car only overheats when a thermostat is installed. This is my second thermostat Ive tried

 

ok, I had my car jacked up on the front like as high as possible, bleeder screw off and let the sucker run forever - since then, it never got hot again

 

the little valve is at the top on the thermostat right?
the little kinda jiggly piece of metal?
if not it wont let all the air bubble escape.

 

check your radiator, and hoses.my radiator was clogged all the way at the bottom where i couldnt see unless i pulled it out.that and my fan clutch was bad.then with the thermostat out it sucked the bottom rad. hose shut from being old and rotten.just sharing expierences to try to help figure out your problem

 

omg your headgasket is blown the reason why it wasn't running hot before is because you had the thermostat out of the car which makes the coolant flow 10 times faster thru the engine!! How does the oil look when its thinning probably thinning because some hot water is getting in the crank case it doesn't take much. Reccomend bringing car to someone that can do a block test...

 

the oil smells like fuel. there is no oil in the coolant. so Im pretty sure its not the head gasket.