after my truck is at running temp for around 20 min and i stop at a light for a minute, or if it idles for a few miutes. when i hit the accelerator it will blow out a puff or sometimes a cloud of blueish smoke. the longer its been running the more it will puff out when i takeoff. it never smokes otherwise.
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.
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.
Jun 1, 2013 at 2:37 AM
