I drive a 2004 Mustang GT, The other day i was driving (highway speed 65mph on cruise) i had been driving about 20 miles at the speed without slowing down or excellerating and i saw some smoke behind me but i was the only one on the free way at the time so i pulled over and i could smell and see i was burning oil. I turned my car off and sat there about 15 minutes, i then started it back up and revved it and it smoked again but then it studdenly stopped and it hasent done it again sense (that was 2 days ago). My powertrain warrenty was voided last year because i put true dual exhaust on it (it passes emitions though) What do you think it was? Also it has 62K miles on it and it gets preventive maintance ALWAYS on time, last oil change was 1500miles ago.
2007-09-16 08:53:43 · 6 answers · asked by Katie 5 in Cars & Transportation ➔ Maintenance & Repairs
Also it has a 4.6L V8 with a K&N cold air intake and true dual exhaust with high flow cats
2007-09-16 08:55:38 · update #1
No, oil level is good, coolant is good, tranny doesnt leak and it has fluid. No check engine light.
2007-09-16 09:09:44 · update #2
If your foot was buried in the accellerator you probably had ring flutter. The rings were not controlling oil into the combustion chambers. After you stopped flogging the engine the rings reseated and all could be well.
2007-09-16 09:10:08 · answer #1 · answered by Anonymous · 0⤊ 0⤋
There is obviously less back pressure on the exhaust stroke now with the dual exhaust but this shouldn't equate to smoke or excessive oil use.
Like one fellow said it may have been running too rich, fuel/air mix.
Keep tabs on you gas mileage and oil consumption. A heavy foot will use a lot of oil. I've had to add a quart a day to light service trucks and guys that drive their cars real hard like they are always in a hi-speed chase. Some will use as much as three to four quarts between oil changes with "normal" driving as well.
You might have to reprogram the computer chip to make it run a bit leaner if this is possible. The timing does change when you put on an exhaust with less back pressure on the engine.
Good Luck!
2007-09-16 09:18:47 · answer #2 · answered by CactiJoe 7 · 0⤊ 0⤋
Are you using 5W20 oil?. the 4.6 will consume some oil especially at highway speeds. My friend's 99GT does the same thing and he went to the dealer who said it was normal.Although we never saw any smoke coming from it. Check the transmission fluid level to see if it's down. Maybe some oil is leaking onto the hot exhaust causing smoke
2007-09-16 09:11:54 · answer #3 · answered by Cruiser 4 · 0⤊ 0⤋
Hopefully you just had an oil ring that was not operating correctly. If it never happens again you got lucky. There are a number of factors that lead to oil ring failure. The kind of oil does matter. If you can see in the port where you put oil in and see a lot of sludge buildup the kind of oil you are using needs to be looked at. There are a number of ways to treat that also.
2007-09-16 09:20:32 · answer #4 · answered by Ron F 3 · 0⤊ 0⤋
All of these answers are good, my opinion is its just dumping too much fuel in which it souldnt be. However if oil is getting past the valves, ditch the ford and get a camaro.
2007-09-16 09:23:46 · answer #5 · answered by .Bad75. 2 · 0⤊ 0⤋
Are you sure it's oil?
Could have been carbon buildup, running rich, computer glitch.
Is you oil level low?
2007-09-16 09:04:35 · answer #6 · answered by Mr. KnowItAll 7 · 0⤊ 0⤋