Mechanics

IT STARTS EASY AND IDEL PRETTY GOOD

1991 Ford F-150 • 145,000 miles

Well when I give it gas it spits & sputters & a littel blue smoke comes from tail pipe I have changed plugs & wires & the TPSand changed the MAP sensor and done a self EEC V test but I can not fix it.
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Steven l jones
August 10, 2013.



Have you checked for vacuum leaks?

Blue smoke means your burning oil. You haven't left very much information to go off but it's a fairly safe bet.

This could be coming from several different areas, such as worn piston rings or worn valve guide seals. Have you done a compression or leak down test of any kind?

Mastertech13
Aug 10, 2013.
Yes I have. Forgot to add this it does`t smoke until it starts sputtering real bad and the smoke smels like the truck is over loading with gas.

Tiny
Randy james
Aug 11, 2013.
Randy,

Is the smoke black?