this time last year I replaced the heads and all the workings inside cause they cracked. So I know its not valves or the head gasket. I replaced the PCV valve today and it runs alot better but it still smokes when I leave a stop light/sign. Its not as bad as it was before I replaced the PCV valve tho. Im out of ideas as to whats wrong? The check engine light comes on after being on the highway for a while. My father has a code reader and he said the O2 sensor was slow to respond and its running lean. But no performance issues (yet).
its a stock 99 ford ranger xlt. V6 4.0 OHV. It dose burn a very small amount of oil between changes. About a half quart. It runs excelent besides the small smoke puffs and the check engine light.
have the same problem?
Saturday, June 1st, 2013 AT 2:37 AM