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Smoke coming from tail pipe

Tiny
STEVEN L JONES
  • MEMBER
  • 1991 FORD F-150
  • 145,000 MILES
Well when I give it gas it spits and sputters and a little blue smoke comes from tail pipe. I have changed plugs, wires and the TPS and changed the MAP sensor. I have done a self EEC V test, but I can not fix it.
Saturday, August 10th, 2013 AT 5:22 PM

4 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
Have you checked for vacuum leaks?
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Saturday, August 10th, 2013 AT 8:30 PM
Tiny
MASTERTECH13
  • MEMBER
  • 3 POSTS
Blue smoke means your burning oil. You have not left very much information to go off but it is 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?
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Saturday, August 10th, 2013 AT 8:32 PM
Tiny
RANDY JAMES
  • MEMBER
  • 1 POST
Yes I have. Forgot to add this it does not smoke until it starts sputtering really bad and the smoke smeels like the truck is over loading with gas.
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Sunday, August 11th, 2013 AT 12:48 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
Randy,

Is the smoke black?
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Sunday, August 11th, 2013 AT 8:55 PM

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