Rough Idling: EGR, Spark Plugs, or Thermostat?
Well, I have that 1989 Mazda 626 but it should be the same as a Honda. Six month ago the engine was idling rough, dropping from 750 to 550 from time to time, and I get hiccups on highway. I brought it to the mechanic, and he cleaned the EGR valve, which was like a plugged pipe. The uneven idling was getting better, but not gone. Couple of days later, I pulled out the spark plugs, and found 3 out of 4 have severe oily ash deposits. Changed the plugs and it got much better. Now I am wondering if a stuck-open thermostat could be the mother of all these problems? Our temperature is hovering around 35 F and it takes 4 or 5 miles to warm up the engine up to normal. I was also told that my car has more white vapor than other guys'. So I am suspecting a stuck-open thermostat. I just did not get a chance to pull it out. So here it is: plugged EGR, fouled spark plugs, engine running cool, and uneven idling. Is there some chicken-egg relationship between them? Any comments appreciated. -- GusTheCat ------------------------------------------------------------------------ Posted via RealCarAudio.com - The checkmate of the caraudio community. http://www.RealCarAudio.com GusTheCat's Profile: http://www.realcaraudio.com/forums/m...fo&userid=3684 View this thread: http://www.realcaraudio.com/forums/s...threadid=45307 |
All times are GMT -4. The time now is 10:08 PM. |
© 2024 MH Sub I, LLC dba Internet Brands