I have a 92 civic w/ 1.5... I have a very rough start and really rough idle when I give it gas it stalls out wit a cloud of white smoke from the intake and smells like fuel... I changed idle control valve, distrubiter, cap, rotor, plugs, wires, pcv valve... im so lost on what the problem is someone who knows hondas really well please help me thanks!

Eric P.:mad:

Bad injector, bad gas, timing belt failure. Burned valves. There is a starting point.

Check EGR valve and associated control components. The EGR connects intake to exhaust. When they fail open, it makes a shaky mess.

I had an defective MAF sensor do a similar thing. While it was starting, the car seemed to run OK only while the starter was engaged. One the starter was disengaged, the engine ran so rough it died immedately. Disconnecting the sensor caused it to run in limp mode. It may have only happened once the car was hot enough to run in closed loop. Didn't test, just fixed. It wasn't a Honda.

Replace the Engine Coolant Temperature (ECT) Sensor, which affects fuel injector pulse width. The ECT Sensor is a temperature dependent resistor (thermistor), whose resistance decreases as the engine coolant temperature increases. It provides a richer mixture when cold, leaner mixture when hot. They become corroded, due to not changing the coolant frequently enough, flood the engine, and waste a tremendous amount of fuel. The ECT Sensor is the two-wire sensor, located beneath the distributor.

Here's what it looks like and costs:

http://www.autozone.com/autozone/cat...ext=ect+sensor