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EGR Valve

Tiny
ROGER BARTRAM
  • MEMBER
  • 2007 MAZDA 6
  • 2.0L
  • 4 CYL
  • TURBO
  • 2WD
  • MANUAL
  • 125,000 MILES
Hi, I have a blue smoke problem on tick over once the engine is hot, have had the DPF filter sorted as diagnostics said.
However, the problem remains, would replacing the EGR valve solve it? Or any other ideas please?
Roger
Sunday, January 15th, 2017 AT 3:21 AM

3 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Blue smoke on start could be oil in turbo from a bad seal or worn bearing. It could also be oil drain in head partially plugged and getting oil by valve seals.
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Sunday, January 15th, 2017 AT 11:11 AM
Tiny
ROGER BARTRAM
  • MEMBER
  • 2 POSTS
Thanks for your reply, it only smokes once hot not on start up and when the DPF light is flashing it does not smoke at all.
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Sunday, January 15th, 2017 AT 11:15 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Still could be valve seals, but scan for codes and if you like clean EGR valve and passages and check for a vacuum leak to DPF.
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Sunday, January 15th, 2017 AT 3:30 PM

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