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Black powder emits only when the vehicle is started after switching off for some time

Tiny
CAPRICORN2369
  • MEMBER
  • 2004 MAZDA VAN
  • 6 CYL
  • MANUAL
  • 2,500,000 MILES
My Mazda van is emmiting black powder in the mornings and when the vehicle is started after a long rest. The black powder does not emit when the vehicle is in use or running
Saturday, February 12th, 2011 AT 6:20 AM

2 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
I would speculate it is running to rich at cold start ups.
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Wednesday, April 13th, 2011 AT 7:33 AM
Tiny
OZZBO
  • MEMBER
  • 4 POSTS
The aircleaner may be blocked, you should try removing and cleaning the element. Also check for obstructions in air intake.
Otherwise the auto choke is not working properly and should be re- adjusted
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Sunday, December 9th, 2012 AT 12:06 PM

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