I love my f150, but why does it smoke when I start it light blue smoke. No rhyme or reason. Warm, cold it just doesn't matter but not all the time? 15,000 miles 2000 step side, super cab. Please help. Thanks to the rest of F150online!

 

have you checked your oil levels? I dunno why it would just be at start, but it could smoke if you have too much oil.

 

Whoa! 15k and blue smoke? With all the cars I've had, the only time I see blue smoke on startup is when the valve train is VERY worn. This allows oil to leak through the valve seals and guides after the engine has been shut off. When you start the engine later, the oil that has leaked into the combustion chamber burns off, thus blue smoke. If you have changed oil as recommended and not severely overheated the engine, I see no reason why this should happen unless there is a manufacturing defect or some nasty abrasive thing has made its way into your oil. You should check with your favorite mechanic (or yourself if you're so inclined) about checking the pcv valve, compression, leakdown and vaccuum during idle.

 

i agree w/ sporkdevil here: the first thing that comes to mind here is too high of an oil level. Did u just do an oil change when it started? Did you use 5w20? If the oil level is good and u used 5w20 or something close, i would next look at the condition of my valves. I haven't had the inclination yet to look at my valve train but i know that the Chilton's manual goes pretty indepth on it.

 

Check oil level, if level is ok do a compression check... If compression is ok it could be a valve guide seal or possibly a head gasket leak... If compression is not ok then oil and/or compression piston ring problem or possibly a head gasket leak.

Sounds like warranty-material to me...

If you suspect there is a problem after checking oil and doing a compression check think about spending $20 and having the engine oil analyzed for contaminants and chemical content. I've heard of people using those results as a vehicle to get warranty work done on problems where a dealer might respond "That's normal ! What you're problem is that you're too emotionally attached to your vehicle !"... I was told that by a Chrysler dealer just before I traded in my 1997 Ram 2500 (piece of crap working on it's third engine in 18 months) for my '99 F-150... Ford's in, Dodge is out...

Good luck...